Zone Alarm PRO FREE!!

http://download.zonealarm.com/bin/free/sum/index.html

Zone alarm pro free today only!!!!

 

Which of the 2 is better in your opinion though? Online Armor Free of Comodo ?

 

Thanks for the info. Would you run them on a Vista PC? Is having comodo better than just using the Windows firewall?

 

Comodo is way better than the Windows Firewall and so is Online Armor, since both have ingoing and outgoing protection which Windows' FW doesn't have.
If you'd checked the links you were given by Mark, you should have seen that both support Vista. Comodo also provides for the 64 bit version.
Here's a link from Matousec about firewall ratings. http://www.matousec.com/projects/firewall-challenge/results.php Hope you'll check out that link as well.
In the mean time Online Armor came out with a new version (3) just recently. That FW version hasn't been tested yet but have no doubt it will be good.