The enclosed file INTERUP.EXE is a Deltafile Chnage file.  It is a patch
to the existing INTERCOM.EXE.  To update your INTERCOM.EXE to the current
version, just place INTERUP.EXE in the same directory with INTERCOM.EXE
and execute INTERUP.  This now check which version you have to make sure
it is the right one, then make the needed modifications to it to produce
the cuurent version.  When it is finished, you can delete INTERUP.EXE,
INTERCOM.EX$ (the backup file) and the zip file that INTERUP.EXE came in.
You should no longer need any of them.