How can i download anti virus whit out buy it?

All of these antivirus progams are free

http://free.grisoft.com/freeweb.php/doc/...

http://www.lavasoftusa.com/software/adaw...

http://www.safer-networking.org/en/index...

http://www.avast.com/eng/avast_4_home.ht...

http://www.activevirusshield.com/antivir...

http://www.free-av.com/

How can i download anti virus whit out buy it?agv

You can go to download.com but three is some anti viruses the have limitations

How can i download anti virus whit out buy it?antivirus software

here: http://www.avast.com/i_kat_207.php
http://www.download.com/AVG-Anti-Virus-F...

AVG Free Edition is the well-known antivirus protection tool. AVG Free is available free of charge to home users for the life of the product. Rapid virus database updates are available for the lifetime of the product, thereby providing the high level of detection capability that millions of users around the world trust to protect their computers. AVG Free is easy to use and will not slow your system down (low system resource requirements). Highlights include automatic update functionality, the AVG Resident Shield, which provides real-time protection as files are opened and programs are run, free Virus Database Updates for the lifetime of the product, and AVG Virus Vault for safe handling of infected files.