Hehe! Standard procedure, in other words...
Problem is that I don't have any trusted network at home; I have to go directly out on the net to update the system.
I normally work around this by saving the latest virus definition file on a CD, and installing AVG and a firewall before I go on-line. This time Windows crashed on me, and I couldn't find the CD with the definitions from the last time. :-(
Anyway, once I got AVG updated, it took twenty seconds to wipe the system clear from viruses... :-D