I would consider the windows firewall adaquate for most people. But if you dont mind a little extra time spent on getting used to a firewall
and Anti-Virus, then why not snag one of the free ones on the list we have up:
****List of Security Programs to Use****
If it were me, I'd most likely go with
COMODO for the firewall and Anti-Virus protection. I prefer to have an outbound/inbound firewall protection so that I know
everything that is happening on my machine. I currently use Trend Micro with Anti-Virus and Firewall and I love it and plan to update my plan in January, but you have to pay for it.
One thing I like about inbound and outbound is the knowledge of the outbound traffic. I like knowing which programs are "talking" (so to speak).
(EDIT) Oh an when (and if) you remove Norton make absolutely sure you use the appropriate Norton uninstaller.
Be sure to get the correct uninstaller for your exact version of Norton!
Get the uninstaller from Norton here:
Norton Removal Tool