Item 2.

(a) Name of Person Filing: This joint statement on Schedule 13G is being filed by David E. Cohen, Ross D. DeMont, Midwood Capital Management LLC, Midwood Capital Partners, L.P. and Midwood Capital Partners QP, L.P., who are collectively referred to as the “Reporting Persons.” Messrs. Cohen and DeMont (the “Managers”) are the managers of Midwood Capital Management LLC (“Capital”), which is the sole general partner of each of Midwood Capital Partners, L.P. (“LP”) and Midwood Capital Partners QP, L.P. (“QP” and together with LP, the “Funds”). The Reporting Persons have entered into a Joint Filing Agreement, dated as of July 14, 2006, a copy of which was previously filed with this Schedule 13G and which is incorporated herein by reference, pursuant to which the Reporting Persons have agreed to file this statement jointly in accordance with the provisions of Rule 13d-1(k) under the Act.

(b) Address of Principal Business Office: The principal business office of the Reporting Persons with respect to the shares reported hereunder is 575 Boylston St., 4^th Floor, Boston, MA 02116.

(c) Citizenship: Capital is a Delaware limited liability company. Each of the Funds is a Delaware limited partnership. Each of the Managers is a U.S. citizen.

(d) Title and Class of Securities: Common stock, $.001 par value (“Common Stock”)

(e) CUSIP Number: 29264P104

Item 3. If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

N/A

Item 4. Ownership

In the aggregate, as of December 31, 2007 the Reporting Persons beneficially own warrants to purchase 44,266 shares of the Common Stock of the Issuer (the “Warrants”), representing approximately 0.4% of such class of securities. The beneficial ownership of each Reporting Person is as follows: (i) LP beneficially owns 30,137 shares of the Common Stock, representing approximately 0.3% of the class, (ii) QP beneficially owns 14,129 shares of the Common Stock, representing approximately 0.1% of the class, and (iii) Capital, as the sole general partner of each Fund, and Messrs. Cohen and DeMont, as the managers of Capital, each beneficially own 44,266 shares of the Common Stock of the Issuer representing approximately 0.4% of the class. The percentage of the Common Stock beneficially owned by each Reporting Person is based on a total of 11,805,828 shares of the Common Stock of the Issuer outstanding (based on 11,594,895 outstanding shares outstanding as of September 30, 2007 as reported in the most recent quarterly report of the Issuer on Form 10-Q for the fiscal quarter ended September 30, 2007, plus 166,667 shares issued upon the exercise of options as reported in the Issuer’s current report on Form 8-K dated December 13, 2007, and assuming full exercise of the Warrants).

Each Fund has the power to vote and dispose of the shares of Common Stock beneficially owned by such Fund (as described above). Capital, as the sole general partner of the Fund, has the sole authority to vote and dispose of all of the shares of Common Stock reported in this Schedule 13G. Each of the Managers, by virtue of their positions as managers of Capital, has the shared authority to vote and dispose of all of the shares of Common Stock reported in this joint statement Schedule 13G.