I'm using an anti-virus called BitDefender and the firewall that's built into Windows XP. Plus I've got a couple of spyware killers that I run every few days. Ad-Aware and Aluria. Ad-Aware is a free download and is very good. Got Aluria in a package deal when I bought BitDefender. I did a lot of internet research on different AV programs and firewalls, and this is the combo that works best for me. I don't get nearly as much gunk on my 'puter now as I did with Norton.