I've recently discovered backdoor.rsbot on my system. I have Norton IS 2003 running with the latest virus updates. Anyway, Norton doesn't seem able to delete it or quarantine it automatically. I click scan comp (for everything) and it detects it and says fixed but at the end of the scan it says infected 1 and it hasn't done anything to remedy the virus. There is no option to quarantine the file either. Maybe because it's infected a system file? It's called MSAPP.dll or something and its in the System32 folder.
How do I get rid of this as Norton 2003 seems unable to (automatically at least) and I am a PC novice