JOINT FILING AGREEMENT

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                                                                    EXHIBIT 4


                             JOINT FILING AGREEMENT


         The undersigned, and each of them, do hereby agree and consent to the
filing of a single statement on behalf of all of them on Schedule 13D and
amendments thereto, in accordance with the provisions of Rule 13d-1(f)(1) of the
Securities Exchange Act of 1934, as amended.

Dated:   December 11, 1997

                                                 THE XXXXXX GROUP, LLC


                                                 By: /S/ XXXX XXXXXX
                                                    --------------------------
                                                      Xxxx Xxxxxx, President



                                                     /S/ XXXXXXX X. XXXXXX
                                                    --------------------------
                                                      Xxxxxxx X. Xxxxxx



                                                     /S/ XXXX XXXXXX
                                                    --------------------------
                                                      Xxxx Xxxxxx



                                                      /S/ XXXXX X. XXXXXX
                                                   --------------------------
                                                      Xxxxx X. Xxxxxx