Give this one a try. Very powerful firewall.
Been using it for the past month and I'm happy with it.
You have the option to also download the firewall and the antivirus -- both are free.
Here is the link to COMODO Firewall
i have avast home edition. and would like to have a firewall to add a little extra but i was told not to use zone alarm. can you pleasehelp me as to what can i use. thank you.