Somehow, I've got a virus.
11/7/2011 6:03:27 PM Startup scanner file Operating memory » explorer.exe(3844) probably a variant of Win32/Sirefef.DA trojan unable to clean OFFICE-PC\User1
I've just noticed an ESET pop-up now mentioning Sirefef.DB
I've found some sites on how to remove, but I don't have the directories (e.g. Win32) and registry keys that it says should be there.
Any help would be greatly appreciated!