Exhibit 1 --------- AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13D Each of the undersigned hereby acknowledges and agrees, pursuant to the provisions of Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, that the...

                                                                       Exhibit 1
                                                                       ---------


              AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13D

      Each of the undersigned hereby acknowledges and agrees, pursuant to the
provisions of Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of
1934, as amended, that the Schedule 13D to which this Agreement is attached as
an Exhibit, and any amendments thereto, will be filed with the Securities and
Exchange Commission jointly on behalf of the undersigned.

Dated: August 6, 2007


                                              DSI ACQUISITION, INC.


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

                                              DSI HOLDINGS, LLC


                                              By:  /s/  Xxxxxx Xxxxxxx
                                                  ------------------------------
                                              Name:   Xxxxxx Xxxxxxx
                                              Title:  Authorized Signatory

                                              XXX FUNDING GP, LLC


                                              By:  /s/  Xxxxxx Xxxxxxx
                                                  ------------------------------
                                              Name:   Xxxxxx Xxxxxxx
                                              Title:  Chief Financial Officer