Hi all, I was backing up my housemate's computer (Windows XP) with my external hard drive because his computer was badly infected (NOD32 2.7 picked up HEAPS of infected files) and apparently some malware on his computer put autorun.ini and start.exe on the root of my external hard drive and my flash drive so now my computer (Windows Vista 64 bit) is infected I think and so is another PC running Windows XP. Initially it looked like NOD32 picked up the malware but apparently it didn't stop it because whenever I try to delete autorun.ini and start.exe they come back. I checked the log and it picked up Win32/Sality.NAJ but said there was an internal error. I guess that means it stopped NOD32. The thing is that virus (Win32/Sality.NAJ) is a couple of years old so maybe it thought it was something it wasn't? Anyway, start.exe is 92KB just in case it matters. I noticed HDD activity when I wasn't doing anything and nothing was open, even after I stopped the indexing process so I shut my computer down and now I don't know what to do. Helpful suggestions would be greatly appreciated. Please help!