. . . with the registries removed because many of my clients would "have a hard time finding all those disks" to reinstall the software.
I've developed various techniques for preserving the desktop, start menus, DLLs, Fonts, etc., but If a program can't reestablish it's registry entries, I just tell them "well, that's the breaks". Office 97 is never a problem, but Office 2000 is a "reinstall from original media" every time.
"Well, could you just, you know, sort of get it on there for us, somehow?"
"Sorry, we run OS/2, so we don't have any of the Microsoft CD-ROMS. You'll just have to 'find' yours".