EXHIBIT A

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                                    EXHIBIT A

                                    AGREEMENT

                          JOINT FILING OF SCHEDULE 13G

                  The undersigned hereby agree to jointly prepare and file with
regulatory authorities a Schedule 13G and any future amendments thereto
reporting each of the undersigned's ownership of securities of CAM Commerce
Solutions, Inc. and hereby affirm that such Schedule 13G is being filed on
behalf of each of the undersigned.

Dated:  April 17, 2002   Xxx X. Xxxxxxxx

                                      /s/ Xxx X. Xxxxxxxx
                                      -------------------
                                          Xxx X. Xxxxxxxx

Dated:  April 17, 2002   Corsair Capital Partners, L.P.

                                      By: /s/ Xxx X. Xxxxxxxx
                                          -------------------
                                              Xxx X. Xxxxxxxx
                                              General Partner

Dated:  April 17, 2002   Corsair Capital Partners II, L.P.

                                      By: Corsair Managing Partners,
                                          General Partner

                                           By: Corsair Management Company, Inc.,
                                               a general partner

                                                    By: /s/ Xxx X. Xxxxxxxx
                                                        -------------------
                                                            Xxx X. Xxxxxxxx
                                                            President

Dated:  April 17, 2002   Corsair Management Company, Inc.

                                      By: /s/ Xxx X. Xxxxxxxx
                                          -------------------
                                              Xxx X. Xxxxxxxx
                                              President

Dated:  April 17, 2002   Corsair Managing Partners

                                      By: Corsair Management Company, Inc.,
                                      a general partner

                                           By: /s/ Xxx X. Xxxxxxxx
                                               -------------------
                                                   Xxx X. Xxxxxxxx
                                                   President