Thank you both for your replies. I really appreciate them.
Powerjuice, thanks for the suggestion of backup. I went ahead and bought an external harddrive and backed up all of my files before I started trying any of these scans. I am so thankful that I went ahead and did that!! I don't think that I lost any files in the repair but I would have been a basket case if I had not known that all of my pictures were safely tucked away.
I've also seen several references to Ubuntu while working on getting this computer going. I'm going to have to research that more.
AustrAlien, thank you for your link! Very straightforward so that even I could understand. Fortunately, the second repair install worked great and I was able to download SP3 to windows. Everything seems pretty stable now and I have rebooted the computer about 4 times now with out a hint of a problem. (Although, I was holding my breath the entire time. ) If the repair install had not worked, I would have used that website. I think that I could have followed it quite easily.
Thank you again for your time and your suggestions.