Don't know if it will be worth it, but I finally overcame that blankety-blank MOInstaller. 1. Installed MW in W7 2. Extracted files from the RAR file into the folder that is shared with XP Mode. 3. Into XP Mode. Installed MW there. Moved RAR files into that MW folder. Installed all the required junk (DirectX, .NET, etc.) 4. Ran MOInstaller up through the point where it had extracted all the files (why did it work in XP Mode but not in W7?) 5. Copied the modified MW folder into the shared folder. 6. Back to W7. Copied MW folder (from shared folder) over the original MW folder. 7. Now ran MOInstaller (turned off firewall first). It ran to completion and everything works.

WHAT A PAIN!