Bar-code-sorry i'm not very computer literate but have you tried the windows defender program(free) as in there,there is an option to see what is running on your computer at that moment! and the option to enable or disable it from there!!! i only mention this as if you haven't tried it it may work!!! also another thought is if you can locate the file(say it is running in system32) if it won't let you delete it yourself(as your antivirus isn't doing it) then sometimes you can create a new folder within(say system32(if that is where it is located)) and move the file to the new folder!and usually you can delete that new folder!!if that works though,be sure to get rid of your system restore points as any other file running can retrieve them even after deletion!! you probally know this method,but i thought i should say it incase you or someone else reading this doesn't(would again recommend using McAfee antivirus software instead of Norton!!)hope you get rid of it before it does too much damage to your 'puter!!!!

Vince.