The PC is off being worked on by Circuit City. We'll have it back by Friday.
We hold the distinction of being the first customers who this particular store has encountered who have brought in an infected machine even though we had Norton 360 up, running, and current. Which is why I think this particular virus is a new one; that, and the fact that all the tech support forums discussing the issue have extremely recent dates on their posts.
I'm sure that all the anti-virus definitions will soon handle this virus, but in the meantime, the cats ;o) have been admonished to surf more carefully, and reject unsolicited offers of software upgrades or updates.