you´re welcome.
I can help you on ipcop if you need... it have a lot of options... very nice options.
Several NICs for multiple reasons (WAN, LAN, DMZ, WiFi, ...)... and it´s a fork of another VERY NICE project: Smoothwall firewall... who offers payed support if you need.
Today Smoothwall and IPCOP are´nt same ...were some years ago... they share some background...
Should look at it too:
http://www.smoothwall.org/ the community version is named Smoothwall EXPRESS!
Good luck and let us know about your toughts after analise options.
Regards
Jáder