wow. ok #1: just because Norton missed something doesn't mean it's shit. have you updated the definitions at all? Worms and whatnot evolve all the time, and if you don't keep the definitions up to date, it can't help you.
#2: adaware(lavasoft) or spybot(I have no clue who makes this one), or another spyware removal program. get it, use it, love it. keep it updated.
#3: the damage may be done, and it may just be time to re-install.
So, readers digest version and moral:
UPDATE YOUR VIRUS DEFINITIONS!!!
if you don't want to pay to subscribe to Nortons, get McAfee, or look into a free one like PCillin
edit:
http://us.mcafee.com/virusInfo/default.asp?id=stinger check that out, too. a friend of mine who works in IT says it'll help clean up your system. she says "run it in safe mode!!" to get to safe mode hit F8 on boot.