And although I haven't used the 64 bit version, I believe it should now be much more configurable from within the Control Panel applet, so you can now configure blocks on outbound traffic as well as inbound.
Hope this helps.
I'm running Windows 7 Pro 64bit on my laptop and I was wondering what my options are for freeware firewalls. I was reading in the COMODO forums that CIS currently doesn't filter IPv6 packets, and IPv6 is obviously enabled by default in Windows 7 so I don't really wan,t to use CIS. I know that PC Tools Firewall Plus claims to be compatible with Windows 7 64 bit, what else is there?