After the attack we suffered last week I posted this at Ubi Zoo:
You may find this article, and the accompanying download, from Microsoft useful:
DropMyRights
My squads site, http://www.DangerDogz.com, hosted on Hostgator was one of hundreds that got hacked due to a Cpanel exploit late last week.
It only affected Internet Explorer but was pretty nasty in that it redirected users to a site that downloaded a Trojan and other nasties.
This serves to prove that even trusted sites can be compromised and compromise you, and that even up to date Antivirus and Spyware can be caught out.
Info about the attack is Here.