I use a firewall and nothing else...if me comp gets a virus I just restore it like new...it's good to do that now and then cause comps get clogged up with c**p anyway! I don't bother with virus protection it makes the comps processor work hard...slowing the comp down almost as much as a virus would. As long as you save your wanted files to external memory there's nothing to worry about...if you get a problem just restore your pc like new..!