In my opinion "Anti-Vir" is the best freeby out there. Has mail, resident protection, automatic updates, basically the works....plus the scanning feature/program is appropriately called "Luke Filewalker"! In official tests, Anti-Vir beats most other freebies out there.
AVG and AVAST are good choices too, check this out:
http://antivirus.about.com/od/antivi...a/freeav_2.htm
Anyways best thing to do is just "GooGle top ten free anti-virus programs, read and decide for yourself. The fun part is always the deciding and choosing part...I would do the same for anti-spyware and firewalls.
My weapons of choice are:
Anti Virus:
Anti-Vir -
http://www.free-av.com/
Firewall:
Zone Alarm free -
http://www.zonealarm.com/store/catal...ku_list_za.jsp
Anti-spyware:
Spyware Doctor - starter edition(This one is free!) -
http://www.majorgeeks.com/Spyware_Do...ion_d5790.html
Ad-Aware -
http://www.lavasoftusa.com/products/ad_aware_free.php
Privacy:
CCleaner(Cleans your history, internet tracks, hard drive and registry optimizer! Great Tool!" -
http://www.ccleaner.com/download
The best part is that all the above are free!!!