Thanks gentlemen. Interesting, Avast detects Trojans but cannot/does not repair them. So is the standard protocol to "delete" them when Avast anounces their presence? BTW, I'm impressed so far with Avast. I'm a long time NAV user but I've wanted to check out Avast and the son moving back in gave us the opportunity.
Thank you for the suggestion. I did that along with a number of other things with help from the wonderful people at PCGuide. There were 800+ SPYware/malware objects, a dozen or so Trojans, three keyloggers, five autodialers, webpage hijackers, and around eight viruses! I ran cwshredder, SPYBOT S&D, Ad-Aware, TrojanHunter, and HJT -- all a couple of times. I then installed SPYWARE BLASTER and a firewall. There's a few things left to clean but it's managerable now.
It makes no sense to me that a seemingly bright young man would put a completely unprotected and undefended PC on the net and then go wallowing in some very slimy websites. Needless to say, he's not getting on my home wireless network.