Well, if I don't know that you know that spyware is different than a virus so maybe that's why they both picked up different amounts. But, I don't know that you that those two are different things. And I don't have any suggestions, I bought Norton System Works 2006, Personal Firewall 2006, and AntiSpam at the after Thanksgiving sales. After all of the rebates it was free. Again, I can't help you, sorry.
Oh yeah, if you have a genuine Windows computer (unless you already have it), you can download Service Pack 2. It includes a personal firewall and other things. If you are going to download I suggest you have broadband or it will take about twelve hours on dial-up. I had to use dial-up, so I left the computer on downloading while I was sleeping.