JOINT FILING AGREEMENT

                             JOINT FILING AGREEMENT

         In accordance with Rule 13d-1(k)(1) promulgated under the Securities
Exchange Act of 1934, the undersigned agree to the joint filing of this
Statement on Schedule 13D with respect to the Common Stock of Sitel Corporation
and further agree to the filing of this agreement as an Exhibit thereto.

Dated: March 14, 2005




                                     PRIVATE EQUITY INVESTORS IV, L.P.

                                     By:   Xxxxx X. Xxxxx Associates IV, LLC
                                              General Partner


                                          By: /s/ Xxxxx X. Xxxxx
                                              -----------------------------
                                              Name:   Xxxxx X. Xxxxx
                                              Title:  Managing Member



                                     XXXXX CAPITAL MANAGEMENT
                                     INCORPORATED

                                     By: /s/ Xxxxx X. Xxxxx
                                         -------------------------------
                                          Name:   Xxxxx X. Xxxxx
                                          Title:  President



                                     /s/ Xxxxx X. Xxxxx
                                     -----------------------------------
                                     Name:  Xxxxx X. Xxxxx