Well, it's good to know that I have the right Virtual DOS Machine installed

, but I'm still thinking that it might be part of the problem. After all, after running the install program, it loads up ntvdm.exe, and even after nothing happens (meaning that the system does not proceed any further than a waiting cursor which then reverts to normal) this program remains, until I end it manually. In fact, if I try to run the install program again, it will spawn another ntvdm.exe, with the same end result, except now I have 2 copies of the program open, doing nothing (using no CPU, but taking up RAM, obviously to keep the program open).
Another thing I've thought about: Installshield. I've been looking around, trying to figure out if the reason I can't install is because there is something wrong with my InstallShield driver, and I thought I'd finally found something that could fix it, but it didn't pan out. I found a section of the InstallShield support area that dealt with getting an updated version of the program. This page described various solutions for the different versions of the program that were not working, such as one entry which would say: For versions starting with 6: Do This. However, even though the list went from 6-9 and from 2.0 down, there was no entry describing the version that FF7 uses: 5.0. Is this the problem? This file verison is no longer supported? Or maybe it isn't, this might be a blind alley, since it might just mean that this version is supported by all versions of the program.
Again, I'm hoping someone out there has the registry file that someone else mentioned in this post, so I can sidestep the isntall program and do it manually.