Norton 360 is a complete internet security suite -- firewall, antivirus, real time scan, and antispyware... Antivirus alone is just the antivirus portion. When I DO run Windows, I tend to run Avast! or AVG for antivirus, and AdAware for spyware as a 'prophylactic' -- these are all free tools, and do the job just as well as their commercial brethren

Hope this helps!

-Corruption