Thanks for the info.
I'm trying to avoid a full restore. I suspect that the backed up registry was corrupted. I have reinstaled Windows which is working fine, and can recreate the desktop. Basically, all I want to do is reinstall all programs, MS Office, graphics programs, utilities, etc. Everything that was in the program files subdirectory, the common files directory. and some data files that I had in a different subdirectory. Can this be done? Will the registry recreate itself when I open each of the programs?