Norton Security Suite

What is the best (preferably free) antivirus software that takes the least resources?

I recently installed Windows on my Intel iMac with Boot Camp and I really have no desire to have my computer ridden with viruses now lol, so I was wondering, what is the best antivirus/antispyware and or firewall software for Windows that doesn't hog the resources. I know Norton, McAfee, and it's similarities do this so i'm looking for something (preferably free) that will work. Any suggestions are appreciated!

Public Comments

1. Norton, AVG, OneCare and McAfee are rubbish. Just to warn you. You need more than anti-virus: I use this combination of free programs, all of which are very kind on resources. Avira: http://www.free-av.com/ (if you don't have anti-virus, or if you have Norton or AVG replace it with this) currently using: 8mb of memory Spyware Terminator (turn off web security guard): http://www.spywareterminator.com/ currently using: ~10mb Spybot: http://www.safer-networking.org/ (use immunise feature) teatimer (not necessary, can be turned off): 43mb Superantispyware: http://www.superantispyware.com/ currently using: 0mb (scanning only) Comodo: http://personalfirewall.comodo.com/ (turn off defense+ to see fewer alerts) currently using: 7.5mb Norton users post your stats!
2. hello i am using avg anti vrirus free edition 7.5 and am satisfied try it if u dont like it un install it and go to magorgeeks.com for evthing your looking for ok GG
3. All this: norton,symantec,panda,avg,sophos,Nod32,F-prot,Trend Micro and so on is FULL SHIT, they do not protect you GOOD :-( beleve me - i'm system administrator and see tonns of viruses at hundreds comps.... the best i know only one by Kapspersky Lab. - Kaspersky Anti-Virus 7.0 it is not free but were you sуу anything best and free at the same time ?