Ignore Cursorcowboy's "advice" because it won't do you a bit of good in this situation. Many of us often wonder if Cursorcowboy isn't just a roving script that searches the MSKB for documents that might, at some point, contain a word or phrase in common with the original post and then posts a link to it. It's the only way you can explain telling someone to get spyware removal tools to clear up a virus without resorting to assuming they're a complete and total smegging idiot.
That aside, assuming Norton can't seem to clear things up, McAfee (I think it's McAfee) makes a handy little program called Stinger. It's a virus scanner that fits on a floppy basically, and only scans for the 30 or so most common viruses and worms instead of the thousands that a full virus scanner looks for (most of which are basically extinct). It would be a good idea to go to a "clean" computer (like maybe one at work) and download a copy of Stinger and put it on a floppy that you can keep in a safe place. Then you always have a backup in case your main scanner fails for whatever reason. There have been times where Stinger managed to clean a system that Norton or McAfee's regular virus scanners couldn't.