For more information see the README file within VMSBACKUP.ZIP; this file just concerns unpacking the distribution. VMSBACKUP is a program to read a VMS saveset. VMSBACKUP.ZIP is the source distribution, containing sources to run VMSBACKUP on unix (most varieties should work) or VMS (VAX or alpha). If you need a copy of unzip for your platform (amiga, IBM mainframe, you name it, it has been ported), see http://www.cdrom.com/pub/infozip/Info-ZIP.html Previous versions of VMSBACKUP were packaged using tar, but zip is much more portable.