EXHIBIT B JOINT FILING AGREEMENT The undersigned do hereby acknowledge and agree that the Schedule 13D, of which this agreement is an exhibit, is filed on behalf of all of the undersigned. January 17, 2003 BURKE, MAYBORN CO., LTD. By: /s/ Frank M....

                                   EXHIBIT B

                             JOINT FILING AGREEMENT

         The undersigned do hereby acknowledge and agree that the Schedule 13D,
of which this agreement is an exhibit, is filed on behalf of all of the
undersigned.

January 17, 2003

XXXXX, MAYBORN CO., LTD.

By:      /s/ Xxxxx X. Xxxxx, Xx.
         -------------------------
Name:    Xxxxx X. Xxxxx, Xx.
Title:   General Partner

By:      THE MAYBORN COMPANY
Title:   General Partner

         By:      /s/ Anyse Xxx Xxxxxxx
                  -------------------------
         Name:    Anyse Xxx Xxxxxxx
         Title:   President

/s/ Xxxxx X. Xxxxx, Xx.
-----------------------
Xxxxx X. Xxxxx, Xx.

/s/ Anyse Xxx Xxxxxxx
-----------------------
Anyse Xxx Xxxxxxx


THE MAYBORN COMPANY

By:      /s/ Anyse Xxx Xxxxxxx
         -------------------------
Name:    Anyse Xxx Xxxxxxx
Title:   President