EXHIBIT 7.1 AGREEMENT OF JOINT FILING

                                                                    EXHIBIT 99.7

                                   EXHIBIT 7.1

                            AGREEMENT OF JOINT FILING

       Xxxxxx X. Xxxxxxxx, Xxxxxxxx Racing, Inc. and Indeck Energy Services,
Inc. hereby agree that the Schedule 13D to which this Agreement is attached as
an exhibit may be filed on behalf of each such person.

Dated: September 25, 2002


                                          /s/ Xxxxxx X. Xxxxxxxx
                                       -----------------------------------------
                                       Xxxxxx X. Xxxxxxxx


                                       XXXXXXXX RACING, INC.

                                          /s/ Xxxxxx X. Xxxxxxxx
                                       -----------------------------------------
                                       By: Xxxxxx X. Xxxxxxxx, Chairman and CEO


                                       INDECK ENERGY SERVICES, INC.

                                          /s/ Xxxxxx X. Xxxxxxxx
                                       -----------------------------------------
                                       By: Xxxxxx X. Xxxxxxxx, Chairman and CEO