>> Looking for a compression scheme that will allow a file to be
>> compressed on an HP3000 (running MPE/ix) and then un-compressed
>> on a PC (running WinNT Workstation 4.0).
...
> Have you tried compression routines for unix under the posix shell?
Sounds like an excellent job for InfoZIP (PKZIP compatible tool),
which has been ported to lots of platforms, including the HP 3000.
See http://www.cdrom.com for InfoZIP and ftp://ftp.nha.co.za for 3000.
Lars.
(ps: all thanks belongs to Jens v Buelow from Neil Harvey Associates)