Like Celegorm sad Mcaffee is second worse virus out there right after Norton. NOD32 is the best AV, u can get a free trial. Use that for ur scan
1st Did u do a system restore? It helped me numerous times.
2nd If system restore didnt help then disable ur system restore (not sure how to do it in vista) but in xp its in ur "Systems" sometimes it helps when u do a serch for viruses, but be aware if u do that all ur saved dates will be lost ( i think...)
3rd Download "spybot" do a full update.
4th restart ur PC and go into safe mod
5th Do a full spybot search, remove what ever bugz u find.
6th Do a full Virus scan (make sure u have it set up right to delite the viruses)
7th restart PC