OK....Hello again! I am finally able to get back to you with some results - although I don't know if any of them are going to mean much..
( And, yes, he has XP on that computer.
I ran Spybot (in safe mode on each each user) and it found and fixed/deleted 58 infected files. I then ran Dr. Web and it found nothing - hence no report to post on what it detected.
I rebooted and was happy to find that many of the things that I could NOT do before (like open the control panel or open My Computer) are working great. However, when I again tried to install BitDefender it will not allow me to do so. It still auto-launches and gives me the option to either Install, Browse CD, or Exit. When I select Install, it does a little bit of self-extracting and then it gives me a dialogue window saying it is looking for a new version of BitDefender. It hangs up there and NEVER moves forward. I'm puzzled as to if it is looking for a new version ON the system OR if it is wanting to connect to the internet and look for a newer/updated version there.... I can't get on the internet yet so I'm still stuck.
So....there's where I am in a nutshell. Any ideas where to go from here? I'm ready.