EXHIBIT A to SCHEDULE 13G JOINT FILING AGREEMENT Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned parties hereby agree that the preceding Schedule 13G is being filed on behalf of each of them. IN WITNESS THEREOF,...

                                    EXHIBIT A
                                       to
                                  SCHEDULE 13G

                             JOINT FILING AGREEMENT

       Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934,
the undersigned parties hereby agree that the preceding Schedule 13G is being
filed on behalf of each of them.

       IN WITNESS THEREOF, the parties have duly executed this agreement on this
11th day of February 2002.


                                                /s/XXXXXXX X. XXXXXX
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                                                Xxxxxxx X. Xxxxxx



                                                /s/XXXXXXX X. XXXXXX
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                                                Xxxxxxx X. Xxxxxx