Exhibit 10.45.1 March 6, 1998 Mr. Frederick A. Landman President and Chief Executive Officer PanAmSat Corporation One Pickwick Plaza Greenwich, Connecticut 06820 Re: Modification of Employment Agreement Dear Fred: Reference is made to that certain...

                                                                Exhibit 10.45.1


March 6, 1998



Xx. Xxxxxxxxx X. Xxxxxxx
President and Chief Executive Officer
PanAmSat Corporation
Xxx Xxxxxxxx Xxxxx
Xxxxxxxxx, Xxxxxxxxxxx  00000

     Re:  Modification of Employment Agreement

Dear Xxxx:

Reference is made to that certain Employment Agreement,  dated May 15, 1997 (the
"Agreement"),  between  you and  PanAmSat  Corporation  (then  known as Magellan
International,  Inc.).  This letter will  confirm  our mutual  agreement  to the
following amendment in the third line of paragraph 7(d) on page 8:

          delete the words "during the first year following the Effective Date,"

          substitute in lieu thereof the words "on or before November 15, 1998,"

Except as amended hereby, the Agreement remains in full force and effect.

If the foregoing is acceptable to you,  please  indicate your  agreement to this
amendment by signing it and returning the enclosed copy of this letter.

                                                  Sincerely,

                                                  PanAmSat Corporation



                                                  By__________________
                                                  Xxxxxxx X. Xxxxx
                                                  Chairman of the Board

AGREED TO:



__________________________
Xxxxxxxxx X. Xxxxxxx