REGISTRATION RIGHTS AGREEMENT

1.    Definitions . As used herein:

1.1.    The term "Holder" means any person owning or having the right to acquire Registrable Shares or any assignee thereof in accordance with Section 2.8 hereof.

1.2.    The terms "register," "registered," and "registration" refer to a registration effected by preparing and filing a registration statement in compliance with the Securities Act (as defined below) and the applicable rules and regulations thereunder, and the declaration or ordering of the effectiveness of such registration statement.

1.3.    For the purposes hereof, the term "Registrable Shares" means and includes (i) the shares of Common Stock of the Company issued or issuable upon conversion of the Notes, (ii) the shares of Common Stock of the Company issued or issuable upon exercise of the Warrants, and (iii) any shares or other securities issued or issuable as a result of a stock split, dividend or other distribution with respect to or in exchange for or in replacement of the shares referenced in (i) and (ii) above, excluding in all cases, however, any Registrable Shares sold by a Person in a transaction in which his or her rights under Section 2 are not assigned.

1.4.    The term "Ownership Percentage" means and includes, with respect to each Holder of Registrable Shares requesting inclusion of Registrable Shares in an offering pursuant to this Agreement, the number of Registrable Shares held by such Holder divided by the aggregate of (i) all Registrable Shares held by all Holders requesting registration in such offering and (ii) the total number of all other securities entitled to registration pursuant to any agreement with the Company and held by others participating in the underwriting.

1.5.    The term "Securities Act" means the Securities Act of 1933, as amended.

1.6.    The term "Public Offering" means and includes the closing of an underwritten public offering pursuant to an effective registration statement under the Securities Act, covering the offer and sale of securities to the general public for the account of the Company.

2.    Registration Rights .

2.1.    "Piggy Back" Registration . If at any time the Company shall determine to register under the Securities Act (including pursuant to a demand of any stockholder of the Company exercising registration rights) any of its Common Stock (other than a registration relating solely to the sale of securities to participants in a Company employee benefits plan, a registration on any form which does not include substantially the same information as would be required to be included in a registration statement covering the sale of the Registrable Shares), it shall send to each Holder written notice of such determination and, if within twenty (20) days after receipt of such notice, such Holder shall so request in writing, the Company shall use its best efforts to include in such registration statement all of the Registrable Shares that such Holder requests to be registered, except that if, in connection with any offering involving an underwriting of Common Stock to be issued by the Company, the managing underwriter shall impose a limitation on the number of shares of Common Stock included in any such registration statement because, in such underwriter's judgment, such limitation is necessary based on market conditions, the Company shall be obligated to include in such registration statement, with respect to the requesting Holder, only an amount of Registrable Shares equal to the product of (i) the number of Registrable Shares that remain available for registration after the underwriter's cut back and (ii) such Holder's Ownership Percentage, as that term is defined in Section 1.4. If any Holder disapproves of the terms of such underwriting, he may elect to withdraw therefrom by written notice to the Company and the underwriter.

2.2.    Effectiveness .

(a)    The Company will use its best efforts to maintain the effectiveness for the period described in the plan of distribution set forth in the registration statement.

(b)    The Company will from time to time amend or supplement such registration statement and the prospectus contained therein as and to the extent necessary to comply with the Securities Act and any applicable state securities statute or regulation.

2.3.    Indemnification .

(a)    Indemnification of Holders . In the event that the Company registers any of the Registrable Shares under the Securities Act, the Company will indemnify and hold harmless each Holder and each underwriter of the Registrable Shares so registered (including any broker or dealer through whom such shares may be sold) and each person, if any, who controls such Holder within the meaning of the Securities Act or any such underwriter within the meaning of Section 15 of the Securities Act from and against any and all losses, claims, damages, expenses or liabilities (or any action in respect thereof), joint or several, to which they or any of them become subject under the Securities Act or under any other statute or at common law or otherwise, and, except as hereinafter provided, will reimburse each such Holder, such Holder's directors and officers, each such underwriter and each such controlling person, if any, for any legal or other expenses reasonably incurred by them or any of them, as such expenses are incurred, in connection with investigating, defending, or settling any actions whether or not resulting in any liability, insofar as such losses, claims, damages, expenses, liabilities or actions arise out of or are based upon (i) any untrue statement or alleged untrue statement of a material fact contained in the registration statement, in any preliminary or amended preliminary prospectus or in the prospectus (or the registration statement or prospectus as from time to time amended or supplemented by the Company); (ii) arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary in order to make the statements therein not misleading; or (iii) any violation by the Company of the Securities Act, the Securities Exchange Act of 1934, as amended (the "Exchange Act"), a state securities law or any rule or regulation under the Securities Act, the Exchange Act or any state securities law; provided, however, that the indemnity contained in this Section 2.3(a) will not apply where such untrue statement or omission was made in such registration statement, preliminary or amended, preliminary prospectus or prospectus in reliance upon and in conformity with information furnished in writing to the Company in connection therewith by such Holder of Registrable Shares, any such underwriter or any such controlling person expressly for use therein. Promptly after receipt by any Holder of Registrable Shares, any underwriter or any controlling person of notice of the commencement of any action in respect of which indemnity may be sought against the Company, such Holder of Registrable Shares, or such underwriter or such controlling person, as the case may be, will notify the Company in writing of the commencement thereof, and, subject to the provisions hereinafter stated, the Company shall assume the defense of such action (including the employment of counsel, who shall be counsel reasonably satisfactory to such Holder of Registrable Shares, such underwriter or such controlling person, as the case may be), and the payment of expenses insofar as such action shall relate to any alleged liability in respect of which indemnity may be sought against the Company. Such Holder of Registrable Shares, any such underwriter or any such controlling person shall have the right to employ separate counsel in any such action and to participate in the defense thereof in the event the representation of such Holder, underwriter or controlling person by counsel retained by or on the behalf of the Company would be inappropriate due to conflicts of interest between any such person and any other party represented by such counsel in such proceeding or action, in which case the Company shall pay, as incurred, the fees and expenses of such separate counsel. The Company shall not be liable to indemnify any person under this Section 2.3(a) for any settlement of any such action effected without the Company's consent (which consent shall not be unreasonably withheld). The Company shall not, except with the approval of each party being indemnified under this Section 2.3(a) (which approval will not be unreasonably withheld), consent to entry of any judgment or enter into any settlement that does not include as an unconditional term thereof the giving by the claimant or plaintiff to the parties being so indemnified of a release from all liability in respect to such claim or litigation.

(b)    Indemnification of Company . In the event that the Company registers any of the Registrable Shares under the Securities Act, each Holder of the Registrable Shares so registered will indemnify and hold harmless the Company, each of its directors, each of its officers who have signed the registration statement, each underwriter of the Registrable Shares so registered (including any broker or dealer through whom any of such shares may be sold) and each person, if any, who controls the Company within the meaning of Section 15 of the Securities Act from and against any and all losses, claims, damages, expenses or liabilities (or any action in respect thereof), joint or several, to which they or any of them may become subject under the Securities Act or under any other statute or at common law or otherwise, and, except as hereinafter provided, will reimburse the Company and each such director, officer, underwriter or controlling person for any legal or other expenses reasonably incurred by them or any of them, as such expenses are incurred, in connection with investigating or defending any actions whether or not resulting in any liability, insofar as such losses, claims, damages, expenses, liabilities or actions arise out of or are based upon any untrue statement or alleged untrue statement of a material fact contained in the registration statement, in any preliminary or amended preliminary prospectus or in the prospectus (or the registration statement or prospectus as from time to time amended or supplemented) or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary in order to make the statements therein not misleading, but only insofar as any such statement or omission was made in reliance upon and in conformity with information furnished in writing to the Company in connection therewith by such Holder, expressly for use therein; provided, however, that such Holder's obligations hereunder shall be limited to an amount equal to the net proceeds to such Holder of the Registrable Shares sold in such registration. Promptly after receipt of notice of the commencement of any action in respect of which indemnity may be sought against such Holder of Registrable Shares, the Company will notify such Holder of Registrable Shares in writing of the comm