I don't like windows. I'm running very tight security policy on my computer and a Trojan managed to slip through.

It was the "userinit.exe" Trojan. Google it. I have a tablet PC I use for playing Go so setting everything back to normal was a matter of wasted time.

Woe is the person who fears regedit and cannot conceptualize a batch file. "Viruses" are not in the same league as their biological counterparts. No matter how much I might KNOW about the flu, the knowledge is irrelevant. On computers, viruses cannot survive long when the administrator knows where to look.