Virus not allowing me to connect to internet=>norton cant log-on to one-click support

ok so I know my computer is infected with some type of virus or trojan and malware.  I have Norton internet security 2010 installed on my computer but it wont load to the once-click support page.  I double-click the norton internet security icon and the one-click support page comes up and i click continue for it to connect to the server, but it never gets to 100% and says no internet connection was detected, and I know for a fact my internet is working, but i think the virus must have knocked it out, because it worked before the virus got on my computer but know trying to load firefox just comes up with "page cannot be diplayed" no matter what website u go to.   So basically if i could get on the internet i know norton could scan the computer and fix the problem, but it cant even connect to the internet to fix anything, so that is my dilemna.  I have Windows XP Pro 32bit and im using a college wireless connection.  Any ideas how to fix this???