================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934

                                 Amendment No. 4

         ---------------------------------------------------------------

                          RIVIERA HOLDINGS CORPORATION

                                (Name of Issuer)

         ---------------------------------------------------------------

                                  Common Stock

                         (Title of Class of Securities)

         ---------------------------------------------------------------

                                   769627 10 0

                                 (CUSIP Number)

         ---------------------------------------------------------------

                             D. Kerry Crenshaw, Esq.
                                 Clark Hill PLC
                         500 Woodward Avenue, Suite 3500
                             Detroit, MI 48226-3435
                                 (313) 965-8266
       (Name, Address and Telephone Number of Person Authorized to Receive
                           Notices and Communications)

         ---------------------------------------------------------------

                                November 19, 2008

             (Date of Event Which Requires Filing of This Statement)

================================================================================

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of Sections 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check
the following box: [ ]

Note: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 240.13d-7 for other
parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).



CUSIP No.    769627 10 0

--------------------------------------------------------------------------------
(1) Names of Reporting Persons I.R.S. Identification Nos. of Above Persons

DESERT ROCK ENTERPRISES LLC
I.R.S. Identification No.: 20-3404082

--------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member of a Group (See Instructions)....
(a).............................................................
(b)..X............................................................

--------------------------------------------------------------------------------
(3) SEC Use Only ....................................................

--------------------------------------------------------------------------------
(4) Source of Funds (See Instructions)

                                              WC

--------------------------------------------------------------------------------
(5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items
    2(d) or 2(e)

--------------------------------------------------------------------------------
(6) Citizenship or Place of Organization

                                              Nevada, United States of America

--------------------------------------------------------------------------------
Number of Shares Beneficially Owned by Each Reporting Person With:

(7) Sole Voting Power
                                              1,109,914

--------------------------------------------------------------------------------
(8) Shared Voting Power
                                              1,109,914

--------------------------------------------------------------------------------
(9) Sole Dispositive Power
                                              1,109,914

--------------------------------------------------------------------------------
(10) Shared Dispositive Power
                                              1,109,914

--------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
                                              1,109,914

--------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares
     (See Instructions)

--------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
                                              8.88%

--------------------------------------------------------------------------------
(14) Type of Reporting Person (See Instructions)
                                              OO



CUSIP No.   769627 10 0

--------------------------------------------------------------------------------
(1) Names of Reporting Persons I.R.S. Identification Nos. of Above Persons

The Derek J. Stevens Trust under agreement dated July 16, 1993

--------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member of a Group (See Instructions).......
(a)...........................................................
(b)..X..........................................................

--------------------------------------------------------------------------------
(3) SEC Use Only ..................................................

--------------------------------------------------------------------------------
(4) Source of Funds (See Instructions)

                                              WC

--------------------------------------------------------------------------------
(5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items
    2(d) or 2(e)

--------------------------------------------------------------------------------
(6) Citizenship or Place of Organization

                                              United States of America

--------------------------------------------------------------------------------
Number of Shares Beneficially Owned by Each Reporting Person With:

(7) Sole Voting Power
                                              167,000

--------------------------------------------------------------------------------
(8) Shared Voting Power
                                              1,276,914

--------------------------------------------------------------------------------
(9) Sole Dispositive Power
                                              167,000

--------------------------------------------------------------------------------
(10) Shared Dispositive Power
                                              1,276,914

--------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
                                              1,276,914

--------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares
     (See Instructions)

--------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
                                              10.21%

--------------------------------------------------------------------------------
(14) Type of Reporting Person (See Instructions)
                                              OO



CUSIP No.    769627 10 0

--------------------------------------------------------------------------------
(1) Names of Reporting Persons I.R.S. Identification Nos. of Above Persons

Derek J. Stevens
(as trustee of the Derek J. Stevens Trust under agreement dated July 16, 1993)

--------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member of a Group (See Instructions)......
(a)............................................................
(b)..X...........................................................

--------------------------------------------------------------------------------
(3) SEC Use Only ..................................................

--------------------------------------------------------------------------------
(4) Source of Funds (See Instructions)

                                              not applicable

--------------------------------------------------------------------------------
(5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items
    2(d) or 2(e)

--------------------------------------------------------------------------------
(6) Citizenship or Place of Organization

                                              United States of America

--------------------------------------------------------------------------------
Number of Shares Beneficially Owned by Each Reporting Person With:

(7) Sole Voting Power
                                              167,000

--------------------------------------------------------------------------------
(8) Shared Voting Power
                                              1,276,914

--------------------------------------------------------------------------------
(9) Sole Dispositive Power
                                              167,000

--------------------------------------------------------------------------------
(10) Shared Dispositive Power
                                              1,276,914

--------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
                                              1,276,914

--------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares
     (See Instructions)

--------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
                                              10.21%

--------------------------------------------------------------------------------
(14) Type of Reporting Person (See Instructions)
                                              IN



CUSIP No.    769627 10 0

--------------------------------------------------------------------------------
(1) Names of Reporting Persons I.R.S. Identification Nos. of Above Persons

The Gregory J. Stevens Trust under agreement dated September 20, 1995

--------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member of a Group (See Instructions).....
(a).............................................................
(b)..X.............................................................

--------------------------------------------------------------------------------
(3) SEC Use Only .....................................................

--------------------------------------------------------------------------------
(4) Source of Funds (See Instructions)
                                              not applicable

--------------------------------------------------------------------------------
(5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items
    2(d) or 2(e)

--------------------------------------------------------------------------------
(6) Citizenship or Place of Organization

                                              United States of America

--------------------------------------------------------------------------------
Number of Shares Beneficially Owned by Each Reporting Person With:

(7) Sole Voting Power
                                              90,000

--------------------------------------------------------------------------------
(8) Shared Voting Power
                                              1,199,914

--------------------------------------------------------------------------------
(9) Sole Dispositive Power
                                              90,000

--------------------------------------------------------------------------------
(10) Shared Dispositive Power
                                              1,199,914

--------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
                                              1,199,914

--------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares
     (See Instructions)

--------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
                                              9.6%

--------------------------------------------------------------------------------
(14) Type of Reporting Person (See Instructions)
                                              OO



CUSIP No.    769627 10 0

--------------------------------------------------------------------------------
(1) Names of Reporting Persons I.R.S. Identification Nos. of Above Persons

Gregory J. Stevens
(as trustee of the Gregory J. Stevens Trust under  agreement dated September 20,
1995)

--------------------------------------------------------------------------------
(2) Check the Appropriate Box if a Member of a Group (See Instructions).....
(a)............................................................
(b)..X...........................................................

--------------------------------------------------------------------------------
(3) SEC Use Only ..................................................

--------------------------------------------------------------------------------
(4) Source of Funds (See Instructions)
                                              not applicable

--------------------------------------------------------------------------------
(5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items
    2(d) or 2(e)

--------------------------------------------------------------------------------
(6) Citizenship or Place of Organization

                                              United States of America

--------------------------------------------------------------------------------
Number of Shares Beneficially Owned by Each Reporting Person With:

(7) Sole Voting Power
                                              90,000

--------------------------------------------------------------------------------
(8) Shared Voting Power
                                              1,199,914

--------------------------------------------------------------------------------
(9) Sole Dispositive Power
                                              90,000

--------------------------------------------------------------------------------
(10) Shared Dispositive Power
                                              1,199,914

--------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
                                              1,199,914

--------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares
     (See Instructions)

--------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
                                              9.6%

--------------------------------------------------------------------------------
(14) Type of Reporting Person (See Instructions)

                                              IN



Item 1. Security and Issuer

      No material change. The class of equity securities to which this statement
on Schedule 13D (the "Statement")  relates is the common stock, par value $0.001
per share (the  "Common  Stock"),  of  Riviera  Holdings  Corporation,  a Nevada
corporation  (the "Issuer"),  and is being filed pursuant to Rule 13d-1(a) under
the  Securities  Exchange Act of 1934,  as amended  (the  "Exchange  Act").  The
principal  executive  offices  of the  Issuer  are  located  at 2901  Las  Vegas
Boulevard South, Las Vegas, Nevada 89109.

Item 2. Identity and Background

      This  Amendment No. 4 amends the Schedule 13D (the  "Schedule  13D") filed
with the Securities and Exchange Commission on September 22, 2006, Amendment No.
1 to Schedule 13D filed with the Securities and Exchange  Commission on November
9, 2006  ("Amendment  No. 1"),  Amendment  No. 2 to Schedule  13D filed with the
Securities  Exchange  Commission  on February  14, 2007  ("Amendment  No.2") and
Amendment  No.  3 to  Schedule  13D  filed  with  the  Securities  and  Exchange
Commission  on August 13, 2007  ("Amendment  No. 3", and  collectively  with the
Schedule  13D and  Amendment  No.  1 and  Amendment  No.  2, the  "Schedule  13D
Filings"),  all on behalf of  Desert  Rock  Enterprises  LLC,  a Nevada  limited
liability company ("Desert Rock"),  the Derek J. Stevens Trust,  under agreement
dated July 16, 1993 (a trust  formed under the laws of the State of Michigan for
the sole benefit of Derek J. Stevens,  the "Derek J. Stevens  Trust"),  Derek J.
Stevens, as trustee of the Derek J. Stevens Trust, the Gregory J. Stevens Trust,
under  agreement  dated September 20, 1995 (a trust formed under the laws of the
State of Michigan  for the sole benefit of Gregory J.  Stevens,  the "Gregory J.
Stevens  Trust") and Gregory J.  Stevens,  as trustee of the Gregory J.  Stevens
Trust,  with  respect to the Common  Stock of the Issuer.  The five  persons are
collectively  referred to as the "Reporting Persons".  The Reporting Persons are
filing jointly and the agreement among the Reporting  Persons to file jointly is
attached as Exhibit 6 hereto,  and incorporated by reference  herein.  Except as
specifically  provided  herein,  this Amendment No. 4 does not modify any of the
information reported in the Schedule 13D Filings. Capitalized terms used but not
otherwise defined herein shall have the meanings  heretofore ascribed to them in
the Schedule 13D Filings.

      The principal  office of Desert Rock is 3960 Howard Hughes Parkway,  Suite
562, Las Vegas,  Nevada 89109.  The business  address of Derek J.  Stevens,  the
Derek J. Stevens Trust, Gregory J. Stevens the Gregory J. Stevens Trust is 21777
Hoover Road, Warren, MI 48089, United States of America.

      The  principal  business  of Desert  Rock is that of a  limited  liability
company,  currently  focusing on the acquisition and development of real estate,
including casino properties.  Derek J. Stevens is the Manager of Desert Rock and
the sole trustee of the Derek J. Stevens Trust.  Both the Derek J. Stevens Trust
and the Gregory J. Stevens Trust are members of Desert Rock, and serve as trusts
for Derek J. Stevens and Gregory J. Stevens, respectively. Gregory J. Stevens is
the sole trustee of the Gregory J. Stevens Trust.

      During the last five years,  neither any Reporting Person nor, to the best
knowledge of any  Reporting  Person,  any person named in this Item 2, has been:
(i) convicted in a criminal proceeding  (excluding traffic violations or similar
misdemeanors),  or (ii) has been a party to a civil  proceeding of a judicial or
administrative body of competent jurisdiction and as a result of such proceeding
was or is  subject  to a  judgment,  decree  or  final  order  enjoining  future
violations  of, or prohibiting  or mandating  activities  subject to, federal or
state securities laws or finding any violation with respect to such laws.

Item 3. Source and Amount of Funds or Other Consideration

      Item  3 is  hereby  amended  and  supplemented  by  adding  the  following
paragraph:

      In acquiring  1,109,914  shares of the Common Stock of the Issuer prior to
November 24, 2008, Desert Rock expended approximately $21,736,857 of its working
capital.  In acquiring 167,000 shares of the Common Stock of the Issuer prior to
November 24, 2008, the Derek J. Stevens Trust expended approximately  $3,573,369
of the funds it held in trust. In acquiring 90,000 shares of the Common Stock of
the Issuer  prior to November 24, 2008,  the Gregory J. Stevens  Trust  expended
approximately  $1,695,453  of the funds it held in trust.  Derek J.  Stevens and
Gregory J. Stevens are listed on this  Amendment No. 4 to Schedule 13D solely in
their  capacity as members of Desert  Rock as  trustees of the Derek J.  Stevens
Trust and the Gregory J. Stevens Trust, respectively.



Item 4. Purpose of Transaction

      Item 4 is hereby amended and supplemented by adding the following
paragraph:

      On  November  19,  2008,  Desert  Rock  entered  into  an  agreement  (the
"Agreement")  with the Issuer,  pursuant to which the Board of  Directors of the
Issuer  granted  to  Desert  Rock  and  its  affiliates  and  related   entities
(collectively,  the  "Investor  Group")  a waiver of (a) the  provisions  of the
Issuer's  Articles of Incorporation  (the "Articles")  which would,  absent such
waiver,  restrict the voting  rights of any person that  acquired 10% or more of
the outstanding  Common Shares and (b) applicable Nevada law regarding  business
combinations with interested  stockholders,  in each case in connection with any
potential  future  acquisition  by the Investor  Group of Common  Shares,  which
acquisition  shall be subject in all cases to any approvals that may be required
from the Nevada and  Colorado  gaming  authorities.  In  exchange,  Desert  Rock
agreed, among other things, that, except in limited circumstances,  the Investor
Group  would  not  (i)  acquire  beneficial  ownership  of the  Issuer's  voting
securities if, after giving effect to the acquisition,  the Investor Group would
own more than 15% of the Issuer's voting  securities or (ii) be entitled to vote
shares at any meeting of the  stockholders of the Issuer (or any action by prior
written  consent)  representing in the aggregate more than the maximum number of
the Issuer's  voting  securities  permitted to be acquired by the Investor Group
under the  Agreement.  Desert  Rock  further  agreed  that,  except  in  limited
circumstances,  until  the  earliest  to  occur  of (a)  the day  following  the
completion of the Issuer's regularly scheduled annual meeting of stockholders in
2010 and (b)  September  1, 2010,  it would not solicit  proxies with respect to
securities  of the  Issuer or submit a  proposal  or offer  involving  a merger,
acquisition or other extraordinary transaction.

      Desert Rock,  the Derek J. Stevens  Trust and the Gregory J. Stevens Trust
acquired  the shares in order to invest in the  Issuer.  The  Reporting  Persons
intend to review from time to time both the  Issuer's  business  affairs and the
business affairs and financial position of Desert Rock. Based on such evaluation
and review,  and subject to applicable  law and  regulation  and depending  upon
certain factors,  including without limitation, the financial performance of the
Issuer,  the Reporting  Persons may consider from time to time various strategic
alternatives.  Such strategic  alternatives may include, among other things, (i)
the acquisition of additional  shares of Common Stock or other securities of the
Issuer through open market  purchases or otherwise,  (ii) the sale of any number
of shares of Common  Stock or other  securities  of the Issuer  through the open
market or otherwise, (iii) extraordinary corporate transactions,  (iv) a sale or
transfer  of  a  material  amount  of  assets  of  the  Issuer  or  any  of  its
subsidiaries,  or (v) any other of the matters  described in clauses (a) through
(j) of Item 4 of Schedule 13D.

      As part of the Reporting  Persons'  ongoing review of their  investment in
the Common Stock of the Issuer,  each and/or all of the  Reporting  Persons will
from time to time hold talks or  discussions  with and respond to inquiries from
various parties, including, without limitation, the Issuer's Board of Directors,
management or representatives,  other shareholders and other persons or entities
regarding the Issuer's affairs and strategic alternatives.

Item 5. Interest in Securities of the Issuer.

      Item 5 is hereby amended and supplemented by adding the following
paragraph:

      Based  upon the  Issuer's  Quarterly  Report on Form 10-Q for the  quarter
ended  September  30,  2008,  there  were  12,498,555  shares  of  Common  Stock
outstanding as of November 4, 2008. Based on the foregoing, the 1,109,914 shares
of Common Stock beneficially owned by Desert Rock represent  approximately 8.88%
of the Common Stock issued and  outstanding  (the  "Desert  Rock  Shares"),  the
167,000  shares of Common Stock  directly  owned by the Derek J.  Stevens  Trust
represent  approximately  1.33% of the Common Stock issued and outstanding  (the
"Derek J. Stevens Trust Shares"), and the 90,000 shares of Common Stock directly
owned by the  Gregory J.  Stevens  Trust  represent  approximately  0.72% of the
Commons Stock issued and  outstanding  (the "Gregory J. Stevens Trust  Shares").
Collectively,  the 1,366,914 shares  beneficially owned by the Reporting Persons
represents  approximately 10.93% of the Common Stock issued and outstanding (the
"Subject  Shares").  The Subject Shares are comprised of the Desert Rock Shares,
the Derek J. Stevens Trust Shares and the Gregory J. Stevens Trust Shares.

      Desert  Rock will have the power to vote or to direct the vote of (and the
power to dispose or direct  the  disposition  of) the  Desert  Rock  Shares.  As
members of Desert Rock,  the Derek J.  Stevens  Trust and the Gregory J. Stevens
Trust may be deemed to have the shared  power to vote or direct the vote of (and
the  shared  power to  dispose or direct  the  disposition  of) the Desert  Rock
Shares, and as Manager of Desert Rock, Derek J. Stevens may be



deemed to have the  shared  power to vote or direct  the vote of (and the shared
power to dispose or direct the disposition  of) the Desert Rock Shares.  None of
the Derek J. Stevens Trust,  the Gregory J. Stevens  Trust,  Derek J. Stevens or
Gregory J.  Stevens  owns any of the  Desert  Rock  Shares and each such  entity
and/or individual  disclaims any beneficial  ownership of the Desert Rock Shares
(and any shares of Common Stock held by Desert Rock).

      The Derek J.  Stevens  Trust  will have the power to vote or to direct the
vote of (and the power to  dispose or direct  the  disposition  of) the Derek J.
Stevens Trust Shares. As trustee of the Derek J. Stevens Trust, Derek J. Stevens
may be deemed to have the  shared  power to vote or direct  the vote of (and the
shared power to dispose or direct the disposition of) the Derek J. Stevens Trust
Shares.  Derek J. Stevens does not own any of the Derek J. Stevens Trust Shares,
and disclaims any beneficial ownership of the Derek J. Stevens Trust Shares.

      The Gregory J. Stevens  Trust will have the power to vote or to direct the
vote of (and the power to dispose or direct the  disposition  of) the Gregory J.
Stevens Trust  Shares.  As trustee of the Gregory J. Stevens  Trust,  Gregory J.
Stevens  may be deemed to have the  shared  power to vote or direct  the vote of
(and the shared  power to dispose or direct the  disposition  of) the Gregory J.
Stevens  Trust  Shares.  Gregory J.  Stevens  does not own any of the Gregory J.
Stevens Trust Shares,  and disclaims any beneficial  ownership of the Gregory J.
Stevens Trust Shares.

      Derek J. Stevens does not personally own any shares of the Common Stock of
the Issuer directly.  By virtue of Derek J. Stevens'  position as the Manager of
Desert Rock, and as trustee of the Derek J. Stevens Trust (which trust is also a
member of Desert Rock),  Derek J. Stevens may be deemed to have the shared power
to vote or direct  the vote of (and the  shared  power to  dispose or direct the
disposition of) the Desert Rock Shares and/or the Derek J. Stevens Trust Shares.
Derek J.  Stevens  disclaims  any  beneficial  ownership  of any of the  Subject
Shares.

      Gregory J. Stevens does not  personally own any shares of the Common Stock
of the Issuer directly. By virtue of Gregory J. Stevens' position as the trustee
of the Gregory J. Stevens  Trust (which trust is also a member of Desert  Rock),
Gregory J.  Stevens may be deemed to have the shared power to vote or direct the
vote of (and the  shared  power to dispose  or direct  the  disposition  of) the
Desert  Rock Shares  and/or the  Gregory J.  Stevens  Trust  Shares.  Gregory J.
Stevens disclaims any beneficial ownership of any of the Subject Shares.

      As of the date  hereof,  neither  any  Reporting  Person,  nor to the best
knowledge of any Reporting Person,  any of the persons set forth in Item 2, owns
any shares of the Common Stock of the Issuer other than the Subject Shares.

      The trading dates,  number of shares of Common Stock purchased or sold and
the price per share for all transactions by the Reporting  Persons in the shares
of Common Stock of the Issuer  within the last 60 days,  which were all acquired
in brokered transactions, are set forth below:

                                                    COST PER
      DATE                                  QTY       SHARE      TOTAL $
      ----                                -------   --------   -----------
      DESERT ROCK ENTERPRISES LLC
      ---------------------------

      November 14, 2008                       900     $3.36    $  3,023.16
      November 24, 2008                   117,014     $3.25    $380,295.50
      Total Desert Rock Enterprises LLC   118,004              $383,318.66

      Except as set forth above,  within the last 60 days, no other transactions
in shares of Common Stock of the Issuer were effected by any  Reporting  Person,
or to the best knowledge of any Reporting  Person,  any of the persons set forth
in Item 2.

      No person other than the Reporting Persons has the right to receive or the
power to direct the receipt of dividends from, or the proceeds from the sale or,
the Subject Shares.

      Clause (e) of Item 5 of Schedule 13D is not applicable.



Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to
Securities of the Issuer.

      Item  6 is  hereby  amended  and  supplemented  by  adding  the  following
paragraph:

      On  November  19,  2008,  Desert  Rock  and the  Issuer  entered  into the
Agreement.  A  copy  of  the  Agreement  is  filed  herewith  as  Exhibit  7 and
incorporated herein by reference.

      Except for the matters  described  herein,  neither the Reporting  Persons
nor, to the best knowledge of any Reporting Person,  any of the person listed in
Item 2, has any contract,  arrangement,  understanding or relationship  with any
person with respect to any securities of the Issuer.

Item 7. Material to be Filed as Exhibits.

EXHIBIT 1   Power of Attorney,  granted by Derek J. Stevens,  relating to Desert
            Rock  Enterprises  LLC, in favor of the  signatories  hereto,  dated
            September 20, 2006.

EXHIBIT 2   Power of  Attorney,  granted by Derek J.  Stevens,  relating  to the
            Derek J. Stevens Trust,  in favor of the signatories  hereto,  dated
            September 20, 2006.

EXHIBIT 3   Power of Attorney,  granted by Gregory J.  Stevens,  relating to the
            Gregory J. Stevens Trust, in favor of the signatories hereto,  dated
            September 20, 2006.

EXHIBIT 4   Power of  Attorney,  granted  by Derek  J.  Stevens  in favor of the
            signatories hereto, dated September 20, 2006.

EXHIBIT 5   Power of  Attorney,  granted by  Gregory J.  Stevens in favor of the
            signatories hereto, dated September 20, 2006.

EXHIBIT 6   Joint Filing Agreement,  by and among the Reporting  Persons,  dated
            September 20, 2006.

EXHIBIT 7   Agreement,  by and among the Issuer and Desert Rock,  dated November
            19, 2008.

Signatures.

      After  reasonable  inquiry  and to the  best of each of the  undersigned's
knowledge  and  belief,  each of the  undersigned,  severally  and not  jointly,
certifies that the information set forth in this statement is true, complete and
correct.  Powers of Attorney,  dated  September  20,  2006,  granted by Derek J.
Stevens,  on behalf of Desert Rock  Enterprises  LLC, the Derek J. Stevens Trust
and himself individually,  in favor of D. Kerry Crenshaw, and granted by Gregory
J. Stevens on behalf of the Gregory J. Stevens  Trust and himself  individually,
in favor of D. Kerry Crenshaw, are attached hereto as Exhibits 1, 2, 3, 4 and 5,
and incorporated herein by reference.



November 25, 2008..............................................................
Date

DESERT ROCK ENTERPRISES LLC

..../s/ Derek J. Stevens......................................
By: Derek J. Stevens, its Manager

DEREK J. STEVENS

..../s/ Derek J. Stevens......................................

THE DEREK J. STEVENS TRUST, under agreement dated July 16, 1993

..../s/ Derek J. Stevens......................................
By: Derek J. Stevens, its Trustee

THE GREGORY J. STEVENS TRUST, under agreement dated September 20, 1995

..../s/ Gregory J. Stevens......................................................
By: Gregory J. Stevens, its Trustee

GREGORY J. STEVENS

..../s/ Gregory J. Stevens......................................................

Attention:  Intentional  misstatements  or omissions of fact constitute  Federal
criminal violations (See 18 U.S.C. 1001).