Is there a free anti virus on the net that will protect me on the net?

I have tried to find something on the internet but without results and I beleive I'm infected. Need help asap.

Is there a free anti virus on the net that will protect me on the net?antispam

AVG free

Is there a free anti virus on the net that will protect me on the net?avast

yea i use avg. i have been for almost 5 months. i feel like it works better than norton but i could be wrong. lol watch my computer crash tomorrow lol
http://www.download.com/

Thall help ya just search and find Yo AVG