I take it you don't know about RRAS? It's the built it Routing and Remote Access Service. There should be enough info in the help file for you to get it up and running. It requires a little more ...

I have a machine that needs to act as a router between 2 subnets, 192.168.0.1-255.255.255.0, and 192.168.1.1-255.255.255.0 I've installed a second NIC and things are setup as follows.<BR>NIC1:<BR>IP ...