I tried Comodo RC1 firewall only. It won't work on my computer. It won't let me connect to my router. I have a Linksys usb adapter connecting to a Linksys router. It works with 2.4 but not 3 RC1.
Your suppose to have an alert to add network. That was my problem. The first run was slow but alert finally came up and it worked fine with my router.