FIXED!!
I found this most useful page:
http://www.kellys-korner-xp.com/top10faqs.htm
It mentioned the specific problem I was having and related it to a registry cleaner called "Easy Cleaner" from toniarts.com. This was recently recommended on TechTV...
Anyway, it corrupts the Help and Support registry. You must exclude that area if you are going to use this program. I was able to repare by using the "Undo" option from my registry cleaning job.
Consider yourselves warned.
It gets EVEN BETTER! This registry cleaner is now $19.95. You cannot correct the problem without updating to the new (not free) version. Just so you know...