I tried my best to find you a combined AV and Firewall.
Here's what I came up with:
Norton Internet Security 2005 15 day trial
Features:
# Norton AntiVirus™ 2005
# Norton™ Personal Firewall 2005
# Norton AntiSpam™ 2005
# Norton™ Parental Control
Try the trial. If you like it, might be worth buying.
Hope that helps