Thanks Dave,
Yes, I too found I had to use the Windows CD for a fresh install. Then I backed up over it and found two (!) directories of \WINDOWS and some confusion and mismatch on the system. So I resorted to the usual format and fresh install of everything. Now, I just back up my personal files system state. It doesn't bring me exactly back to before is close enough. I'll do your tips for next time and thanks for the help.
Sonya