Caught a Virus and Norton Antivirus is useless

I got hold of a serious pain in the backside. Wound up getting weblookup and some other stuff. This removed my google toolbar and installed another toolbar and locked the toolbars so I could not access anything or make any changes. Also Norton Antivirus would/will not start up. After a lot of registery edits I was able to get control of the toolbar and I can start up Norton Antivirus. But as Norton is scanning the C drive it freezes up, over and over! I've downloaded several fixes from the Norton website and each one of them freezes up too!

Also I have this new program that always seems to be running, even if I close it. And I cannot find it in the process list! This program looks like a popup. And if i click on the close button the programs disappers very quickly. It does not close like a normal windows program. This program has no windows box around it. There are 6 button boxes, one on top of the other with a close box at the bottom. Starting at the top they are labeled Gambling, Dating,Pharmacy, XXX, Spyware, Insurance. Just rolling the mouse over each box causes the program to go to the internet and grab some links.

Any thoughts on how to get rid of this is very welcome.