JOINT FILING AGREEMENT

   1
CUSIP NO. ▇▇▇▇▇▇▇▇▇


                                                                       EXHIBIT 9

                                    EXHIBIT 9

                             JOINT FILING AGREEMENT

                  The undersigned reporting persons hereby agree that the
statements filed pursuant to this Schedule 13D, to which this Agreement is filed
as an exhibit, are filed on behalf of each of them.

Date:  September 10, 2001           ▇.▇. ▇▇▇▇▇▇ PARTNERS (SBIC), LLC



                                    By:  /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
                                       -----------------------------------------
                                         Name:  ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
                                         Title:  President


Date:  September 10, 2001           ▇.▇. ▇▇▇▇▇▇ PARTNERS (BHCA), L.P.


                                    By:  JPMP MASTER FUND MANAGER, L.P.,
                                         ITS GENERAL PARTNER

                                    By:  JPMP CAPITAL CORP.,
                                         ITS GENERAL PARTNER



                                    By:  /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
                                       -----------------------------------------
                                         Name:  ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
                                         Title:  President


Date:  September 10, 2001           QUETZAL/▇.▇. ▇▇▇▇▇▇ PARTNERS, L.P.


                                    By:  Quetzal/▇.▇. ▇▇▇▇▇▇ Partners (GP), LLC,
                                         it General Partner



                                    By:  /s/ ▇▇▇▇▇▇ ▇. ▇▇▇▇▇
                                       -----------------------------------------
                                         Name:  ▇▇▇▇▇▇ ▇. ▇▇▇▇▇
                                         Title:  Managing Member