Eddy
15
I only use IE 6 SP1 to check for updates from the MS website, since the automatic updates in XP is only checking for high rated security patches and nothing else.
For my lan I use a Zyxel 10 router/hub/firewall.
One one of my other systems I use Avast and ZA Pro.
But most of all, I use common sense and the knowledge I have build up in those years.