AGREEMENT REGARDING FILING SCHEDULE 13D

Exhibit A

AGREEMENT REGARDING FILING SCHEDULE 13D

Each of the undersigned hereby agrees that the Schedule 13D to which this agreement is filed as an exhibit shall be filed with the Securities and Exchange Commission on behalf of the parties hereto, and hereby represents to each of the other parties hereto that he, she or it is eligible to use Schedule 13D.  Each of the undersigned agrees that he, she or it is responsible for the timely filing of Schedule 13D and any amendments thereto and for the completeness and accuracy of the information concerning himself, herself or itself contained therein, and that none of the parties hereto is responsible for the completeness or accuracy of the information concerning the other parties, unless he, she or it knows or has reason to believe that the information concerning the other parties is inaccurate.

January 9, 2007

/s/X.X. Xxxxx

X. X. Xxxxx

January 9, 2007

/s/Xxx Xx Xxxxx

Xxx Xx Xxxxx

January 9, 2007

/s/Xxxx X. Xxxxx, Xx.

Xxxx X. Xxxxx, Xx.

January 9, 2007

/s/Xxxx X. Xxxxx

Xxxx X. Xxxxx

January 9, 2007

Xxxxx/Readyville Charitable Lead Annuity Trust

By: /s/Xxxx X. Xxxxx

Xxxx X. Xxxxx, Trustee

January 9, 2007

Xxxxx Investments, L.P.

By: /s/Xxxx X. Xxxxx

Xxxx X. Xxxxx, General Partner

January 9, 2007

Readyville Family, L.P.

By: /s/Xxxx X. Xxxxx

Xxxx X. Xxxxx, General Partner

January 9, 2007

Windsor Associates, L.P.

By: /s/Xxxxxx Xxx Xxxxx

Xxxxxx Xxx Xxxxx, General Partner           

January 9, 2007

/s/Xxxxxx Xxx Xxxxx

Xxxxxx Xxx Xxxxx

January 9, 2007

Xxxxx Family Foundation

By: /s/Xxxxxx X. Xxxxx

Xxxxxx X. Xxxxx, Trustee

January 9, 2007

Xxxx Family L.P.

By: /s/Xxxxxx X. Xxxxx

Xxxxxx X. Xxxxx, General Partner

January 9, 2007

Xxxxx Charitable Lead Trust

By: /s/Xxxxxx X. Xxxxx

Xxxxxx X. Xxxxx, Trustee

January 9, 2007

/s/Xxxxxx X. Xxxxx

Xxxxxx X. Xxxxx

January 9, 2007

Xxxxx Grandchildren’s Trust I

By: /s/Xxxxxx X. Xxxxx

Xxxxxx X. Xxxxx, Trustee

January 9, 2007

/s/W. Xxxxxx Xxxxx

W. Xxxxxx Xxxxx

January 9, 2007

AdamsMark, L.P.

By: /s/W. Xxxxxx Xxxxx

W. Xxxxxx Xxxxx, General Partner

January 9, 2007

Springland Ventures, L.P.

By: /s/W. Xxxxxx Xxxxx

W. Xxxxxx Xxxxx, General Partner

January 9, 2007

Xxxxx Xxxxxxxxx Trust

By: /s/W. Xxxxxx Xxxxx

W. Xxxxxx Xxxxx, Trustee

January 9, 2007

Xxxxx Children’s Trust

By: /s/W. Xxxxxx Xxxxx

W. Xxxxxx Xxxxx, Trustee

January 9, 2007

Xxxxx Family Foundation II

By:/s/W. Xxxxxx Xxxxx

W. Xxxxxx Xxxxx, Trustee

January 9, 2007

W. Xxxxxx and Xxxxxxx X. Xxxxx

Grandchildren’s Trust

By: /s/W. Xxxxxx Xxxxx

W. Xxxxxx Xxxxx, Trustee

January 9, 2007

The Xxxxx Group, L.P.

By: /s/Xxxxxxx X. Xxxxx

Xxxxxxx X. Xxxxx, General Partner

January 9, 2007

/s/Xxxxxxx X. Xxxxx

Xxxxxxx X. Xxxxx

January 9, 2007                                                                  /s/Xxxxxx X. Xxxxx

Xxxxxx X. Xxxxx

January 9, 2007

/s/Xxxxx X. Xxxxx, III

Xxxxx X. Xxxxx, III

January 9, 2007

/s/Xxxx Xxxxxxxxx Xxxxxxx Xxxxx

Xxxx Xxxxxxxxx Xxxxxxx Xxxxx

January 9, 2007

/s/Xxxxxx Xxxx Xxxxx

Xxxxxx Xxxx Xxxxx

January 9, 2007

XXXXXX, X.X.

By: /s/Xxxxxx X. Xxxxxxx

Xxxxxx X. Xxxxxxx, General Partner

January 9, 2007

/s/Xxxxxx X. Xxxxxxx

Xxxxxx X. Xxxxxxx

January 9, 0000

Xxxxxxxxx Xxxxxxxxx Investments, L.P.

By: /s/D. Xxxxxx Xxxxxx

D. Xxxxxx Xxxxxx, General Partner

January 9, 2007

Xxxxxx Family Limited Partnership

By: /s/D. Xxxxxx Xxxxxx

D. Xxxxxx Xxxxxx, General Partner

January 9, 2007

Xxxxxxxxxx Associates, L.P.

By: /s/D. Xxxxxx Xxxxxx

D. Xxxxxx Xxxxxx, General Partner

January 9, 2007

/s/D. Xxxxxx Xxxxxx

D. Xxxxxx Xxxxxx

January 9, 2007

Xxxxx Grandchildren’s Trust II

By: /s/Xxxxxx X. Xxxxxx

Xxxxxx X. Xxxxxx, Trustee

January 9, 2007

/s/Xxx X. XxxXxxxxx

Xxx X. XxxXxxxxx

January 9, 0000

Xxxxxx, X.X.

By: /s/Xxxxxxx X. XxxXxxxxx

Xxxxxxx X. XxxXxxxxx, General Partner

January 9, 2007

/s/Xxxxxxx X. XxxXxxxxx

Xxxxxxx X. XxxXxxxxx

January 9, 2007

/s/Xxxxxxx X. Xxxxxx

Xxxxxxx X. Xxxxxx

January 9, 2007

/s/Xxxxxx X. Xxxxxxx

Xxxxxx X. Xxxxxxx

January 9, 2007

/s/Xxxxx Xxxxx Xxxxxxx

Xxxxx Xxxxx Xxxxxxx

January 9, 2007

D. Xxxxx Xxxxxxx Associates, L.P.

By:/s/D. Xxxxx Xxxxxxx

D. Xxxxx Xxxxxxx, General Partner

January 9, 2007

/s/Xxxxx X. Xxxxxxxx

Xxxxx X. Xxxxxxxx

January 9, 2007

/s/Xxxxxxx Xxxxx Xxxxxxx Xxxxxx

Xxxxxxx Xxxxx Xxxxxxx Xxxxxx

January 9, 2007

/s/Xxxxxx X. Xxxxxxxx

Xxxxxx X. Xxxxxxxx

January 9, 2007

Richmond Properties, LLC

By:/s/Xxxxxxx X. Xxxxxxxx

Xxxxxxx X Xxxxxxxx, Managing Member

January 9, 2007

Richmond Equities, LLC

By: /s/Xxxxxxx X. Xxxxxxxx

Xxxxxxx X. Xxxxxxxx, Managing Member

January 9, 2007

/s/Xxxxxxx X. Xxxxxxxx

Xxxxxxx X. Xxxxxxxx

January 9, 2007

/s/Xxxxxx X. Xxxxxxxx

Xxxxxx X. Xxxxxxxx

January 9, 2007

Xxxxxxx X. and Xxxxxx X. Xxxxxxxx Revocable Living Trust

By: /s/Xxxxxxx X. Xxxxxxxx

Xxxxxxx X. Xxxxxxxx, Trustee

By:/s/Xxxxxx X. Xxxxxxxx

Xxxxxx X. Xxxxxxxx, Trustee

January 9, 2007

/s/Xxxx Xxxxxxx Settle

Xxxx Xxxxxxx Settle

January 9, 2007

Xxx Xxxxxx Revocable Intervivos Trust

By: /s/Xxx Xxxxxx

Xxx Xxxxxx, Trustee

January 9, 2007

/s/Xxx Xxxxxx

Xxx Xxxxxx

January 9, 2007

East Main Associates, L.P.

By:/s/Xxxxxxxxx X. Xxxxxxxx

Xxxxxxxxx X. Xxxxxxxx, General Partner

January 9, 2007

/s/Xxxxxxxxx X. Xxxxxxxx

Xxxxxxxxx X. Xxxxxxxx

January 9, 2007

/s/Xxxxxx X. Xxxxxxxx

Xxxxxx X. Xxxxxxxx

January 9, 2007

/s/Xxxxxxx Xxxxxx

Xxxxxxx Xxxxxx

January 9, 2007

/s/Xxxx Xxxxxx

Xxxx Xxxxxx

January 9, 2007

RAGS Family, L.P.

By: /s/Xxxxx X. Xxxxxx

Xxxxx X. Xxxxxx, General Partner

January 9, 2007

/s/Xxxxx X. Xxxxxx

Xxxxx X. Xxxxxx