I've been in the XP forum before and received some painstaking advice as to what to do to resolve this. For a description of the problem and what I've done to try to correct it, see:
After that, I went to the malware forum where a variety of other fixes were tried to fix this problem. Thanks to both of the people that were involved in that effort. I now have been referred back to here and have received the "all clear" from "my" My Geek in the malware forum.
Unfortunately, updates still don't work.
I suspect this is problem has a simple solutiion, but I have no idea what it is.
Suggestions, whether simple or complex, are welcome.