My computer virus and internet virus problems!?

Hi there, this one i need help with from as many people as there is. I been downloading video ipod converters lately and i didnt knw wat happened but i kept downloading too much and now i got some kind of virus. My computer cant reach the internet properly i guess. When I log on AIM (AOL messenger) it keeps on making me logging off and on and then when i play warcraft III battle.net i cant join a single game auctally i could but it won't let me play it itz jst dont load at all. I tried many free anti virus stuff like regcure which found ALOT of problems but couldn't cure it since itz gota have a leceince and then i got norton and many many more. So plz giv me all your sugguestions on how to fix my problems, any help will do i will try anything! i like answers from as many people that can help me if posibble. And please give me helping links and btw this is my last 5 points so plz help thx alot!