Thank you,
rdsbc, for sharing your configuration.
I agree with each of the great tips you've already received here, and Windows Firewall has also been a most reliable free choice I have used ever since coming to MT.
We use it on our own Windows 7 SP1!
Chromatinfish is correct, ESET Smart Security includes it's own firewall incouded but as Exterminator mentioned ESET NOD 32 (without it's own firewall) works just fine with Windows Firewall already included with your Windows 7 system.
PS Merry Holidays!