Trust me pay for Kaspersky Internet Security or the paid version of Avira. As I've said before its like buying a Porsche and fitting a laserline alarm from Argos on it as security.

You can get a license for KIS for £7.50 which will work on upto 3 PC's and download KIS10 from there site and the key works fine. Just remove the KIS10 cd option.

Free recommendations I give is Avira AV and either Outpost Firewall (free version) or Comodo

http://www.techsupportalert.com/best-free-firewall.htm

http://www.techsupportalert.com/best-free-anti-virus-software.htm