JOINT FILING AGREEMENT

                                    EXHIBIT A

                             JOINT FILING AGREEMENT

         In accordance with Rule 13d-1(f)(1) under the Securities Exchange Act
of 1934, as amended, the undersigned hereby agrees to the joint filing with each
other of the attached statement on Schedule 13G and to all amendments to such
statement and that such statement and all amendments to such statement is made
on behalf of each of them.

Date:  June 3, 2002

                                  BEAR HUNTER HOLDINGS LLC


                                  By: /s/   Xxxxxxx Xxxxxxxx
                                     --------------------------------
                                      Name: Xxxxxxx Xxxxxxxx
                                      Title:Managing Member


                                  BEAR XXXXXX SPECIALISTS LLC


                                  By: /s/   Xxxxxxx Xxxxxxxx
                                     --------------------------------
                                      Name: Xxxxxxx Xxxxxxxx
                                      Title:COO


                                  ESTATE OF XXXXXX XXXXXX


                                  By: /s/ Xxxxxxxx X. Xxxxxx
                                     --------------------------------
                                      Xxxxxxxx X. Xxxxxx
                                      Personal Representative



                                  XXXXXXXX X. XXXXXX


                                  HBH SPECIALISTS LLC

                                  By: /s/   Xxxxxx Xxxxxxx
                                     --------------------------------
                                      Name: Xxxxxx Xxxxxxx
                                      Title:CEO


                                 Page 16 of 18

                                  HYY SPECIALISTS LLC


                                  By: /s/ Xxxxxxxx X. Xxxxxx
                                     --------------------------------
                                      Xxxxxxxx X. Xxxxxx
                                      Authorized Representative


                                  PAL-BRO PARTNERS LLC


                                  By: /s/ Xxxxxx Xxxxxxx
                                     -------------------
                                          Xxxxxx Xxxxxxx
                                          Member-Manager




                                 Page 17 of 18