CUSIP No. 218352102

Names of Reporting Persons.

I.R.S. Identification Nos. of above persons (entities only).

    Joseph C. Cook, Jr.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)  ¨        (b)  x

SEC Use Only

Source of funds

    PF

Check if disclosure of legal proceedings is required pursuant to Items 29d) or 2(e)                                                                    ¨

Citizenship or Place of Organization

    USA

Number of  

shares

beneficially  

owned by

each

reporting

person

with:

Sole Voting Power

    2,972,909 ⁽¹⁾

Shared Voting Power

    363,995 ⁽²⁾

Sole Dispositive Power

    2,972,909 ⁽¹⁾

Shared Dispositive Power

    363,995 ⁽²⁾

11

Aggregate Amount Beneficially Owned by Each Reporting Person

    3,336,904

12

Check Box If the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)                                                    ¨

13

Percent of Class Represented by Amount in Row (9)

    5.3% ⁽³⁾

14

Type of Reporting Person (See Instructions)

    IN

Includes (a) 1,008,584 shares held of record by the Reporting Person and 193,258 shares that may be acquired by the Reporting Person within 60 days of December 31, 2009 pursuant to warrants, (b) 1,130,000 shares held of record by Farview Management, Co. L.P., a Texas limited partnership, and 14,402 shares that may be acquired by that entity within 60 days of December 31, 2009 pursuant to warrants; (c) 414,826 shares held of record by the Joseph C. Cook, Jr., IRA Rollover and 86,839 shares that may be acquired by that entity within 60 days of December 31, 2009 and (d) 125,000 shares issuable pursuant to options exercisable by the Reporting Person within 60 days of December 31, 2009.

Represents 350,000 shares held of record by a private foundation and 13,995 shares that may be acquired by the entity within 60 days of December 31, 2009 pursuant to a warrant. Mr. Cook has shared voting power but disclaims beneficial interest in these shares.

The percentage was calculated based upon 62,474,686 shares of common stock issued and outstanding as of December 31, 2009 according to information provided by the Issuer, 308,494 shares that may be acquired issuable within 60 days of that date to the Reporting Person and other entities as noted in footnotes 1 and 2 above pursuant to warrants and 125,000 shares issuable pursuant to options exercisable by the Reporting Person within 60 days of December 31, 2009.