I would recommend either avast or avira. they are the top free ones. but you also need some good spyware protection too, and superantispyware would be your best bet. You can download all of these security software’s from here > http://www.virusforum.net/Thread-List-of-free-anti-virus-spyware-protection-Personal-Firewalls-updated-1 Plus others
Free: http://www.avast.com http://www.free.avg.com
For the best Internet Security use: http://www.symantec.com
I would recommend either avast or avira. they are the top free ones. but you also need some good spyware protection too, and superantispyware would be your best bet. You can download all of these security software’s from here > http://www.virusforum.net/Thread-List-of-free-anti-virus-spyware-protection-Personal-Firewalls-updated-1
Plus others
Free: http://www.avast.com
http://www.free.avg.com
For the best Internet Security use: http://www.symantec.com