The best resource for getting information on how to remove viruses, worms, etc. is the Norton website:
http://securityresponse.symantec.com/
I run Norton Internet Security which includes Norton Anti Virus. I have my computer set to run a complete system virus scan every night and run "Live Update" to check for the lastes virus definition files once a day. They catch about everything that comes along.
But if you get hit with a virus or worm, go to the site above and they will tell you how to fix it.