[quote name='Desbreko'][COLOR=#4b0082].
I'd also recommend getting [URL="http://www.safer-networking.org/en/index.html"][U]SpyBot - Search & Destroy[/U][/URL] in addition to whatever anti-virus software you get. It can detect malware that anti-virus programs might miss.[/COLOR][/quote]
I'll second this. Spybot is a God send.
Norton is also awful. AVG is probably the best free antivirus. However, Spyware Doctor I find to be the best but it's not free.