JOINT FILING AGREEMENT

   1
                                                                       Exhibit 4



                             JOINT FILING AGREEMENT

                  This will confirm the agreement by and among all of the
undersigned that the Schedule 13D filed on or about this date with respect to
the beneficial ownership of the undersigned of Xxxxx Incorporated is being, and
any and all amendments to such Schedule may be, filed on behalf of each of the
undersigned. This Agreement may be executed in two or more counterparts, each of
which will be deemed an original, but all of which together shall constitute one
and the same instrument.

Dated:  February 4, 2000
                                       CALENDAR HOLDINGS, INC.



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


                                       CALENDAR ACQUISITION CORP.



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


                                       SAW MILL CAPITAL FUND II, L.P.

                                       By:  Saw Mill Investments II LLC
                                       Its: General Partner

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


                                       Saw Mill Investments II LLC

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



                                       /s/ Xxxxxx X. Xxxxx
                                       -----------------------------------------
                                       Xxxxxx X. Xxxxx

                                       /s/ Xxxxxxx X. Xxxxxx
                                       -----------------------------------------
                                       Xxxxxxx X. Xxxxxx
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                                       /s/ Xxxx Train
                                       -----------------------------------------
                                       Xxxx Train


                                       /s/ Xxxxx X. Xxxxxx
                                       -----------------------------------------
                                       Xxxxx X. Xxxxxx


                                       THE XXXXXX FAMILY FOUNDATION



                                       By:    /s/ Xxxxxxx X. Xxxxxx
                                            ------------------------------------
                                            Name:    Xxxxxxx X. Xxxxxx
                                            Title:   Trustee