EXHIBIT 1

                                    EXHIBIT 1

                             JOINT FILING AGREEMENT


                  In accordance with Rule 13D-1(f) under the Securities Exchange
Act of 1934, as amended,  the undersigned agree to the joint filing on behalf of
each of them of a statement on Schedule 13D (including  amendments thereto) with
respect to the Shares of common  stock,  par value $.01 per share,  of Physician
Computer  Network,  Inc., and further agree that this Joint Filing  Agreement be
included  as an  Exhibit  to  such  joint  filings.  In  evidence  thereof,  the
undersigned,  being duly  authorized,  have executed this Joint Filing Agreement
this 6th day of April, 1998.




                                                     /s/  Xxxxxx X. Picower
                                                    -------------------------- 
                                                           Xxxxxx X. Picower



                                                 DECISIONS INCORPORATED



                                                 By: /s/  April X. Xxxxxxxx
                                                    --------------------------
                                                           April X. Xxxxxxxx
                                                            President


                                                 JA SPECIAL LIMITED PARTNERSHIP

                                                 By:  Decisions Incorporated
                                                           General Partner



                                                 By:  /s/ April X. Xxxxxxxx
                                                     -------------------------
                                                           April X. Xxxxxxxx
                                                             President