How can protect my PC from viruses without paying?

I receive warnings daily that my computer is probably infected from viruses.How can emface it free of charge?

How can protect my PC from viruses without paying?anti virus protection

Go there

http://www.free-av.com

How can protect my PC from viruses without paying?antivirus

http://free.grisoft.com/doc/1

Go to this site and get Free anti-virus and anti-spyware. I have them and they work good and update daily.
i use avast antivirus...it's free for download; never had a virus infection since

it's as good as norton and mcafee, if not better; and it has regular free updates too...

you can dl from: www.avast.com
All of the following are FREE.

I use all of the following Free software with Windows XP SP2 and Internet Explorer with MSN toolbar and the pop-up blocker turned on and have never had a single problem with my computer sense Microsoft came out with SP2. (knock on wood.) (And be sure to keep Windows and the following software Updated)

The best Anti-virus is: AVG Anti-Virus Free Edition. (www.grisoft.com)

The Best Spyware defense is: SpyBot Search and Destroy (%26lt;--Englishhttp://www.safer-networking.org/en/index... version

AND: AdAware SE (www.lavasoft.com)

AND Spyware Blaster (http://www.javacoolsoftware.info/kb/)