I need help to find a good Anti virus.?

I've got a pc, HP AMD turion, and I need to buy a good anti virus. But I am very confused and I don't know which one is good. Could anyone help me?

I need help to find a good Anti virus.?antivirus programs

Kaspersky, i think it's best.

I need help to find a good Anti virus.?computer protection

I really recommend "Avast" anti virus. It is free and works just as good as any other program, expensive or not. It doesn't hog your computer's memory like Norton or McAfee and I have had no problems with it. In my humble opinion (and having tried norton, mcafee and many other free ones) it is the best I have encountered. At least try it for free, before you fork out a lot of money for one that may be no better.
AVAST home edition is a very good start for an anti virus
AVG free edition is good basic software that you can get free online. It updates regularly and I find it actually filter very well for basic internet usage. For more secure needs I find Norton provides a good range of products so you can tailor your purchase for the kind of protection you need.
http://free.grisoft.com/doc/5390/lng/us/...
There are several good Anti-virus programs that are FREE.

Go to http://www.download.com and get the Free version of AVG. Install that, and run a full scan. If it's free, you can try another.