uh oh..i was trying to update and application called Tabit (guitar tabs) and so i get a message saying "Update error: File integrity check failed. YOur system may have a virus that needs to be cleaned out."

this also happened to me when i was going to play Starcraft online...but i got a message saying something about a possible virus and that uninstalling and reinstalling the application might help

its not too urgent, im on my other comp (good ol' pentuim 2) its just kinda annoying, besides that, everything works so far

Are you looking for a good online scanner ?

http://housecall.antivirus.com/pc_housecall/

Let us Know how you make out.