The laters email trojan "YAHA" is one of the biggest bitches I've done manual removals on so far. I had over 1200 emails sent in a single day.
Fortunately, there is an excellent repair program now that fixes many of the worst recent email virus's, including including Lirva, Elkern, YAHA, KLEZ and BUGBEAR.
I strongly recommend you all visit this site and dowlnoad the program stinger.exe BEFORE infection happens. You should also print out the instuctions for running the tool (simple, but if you have windows me or xp you will have to disable the system restore first).
