Dual NIC DHCP Router Configuration

Should be a simple question:

Can you assist me in configuring an NT 4.0 Server with SP6a and dual NICs and DHCP enabled to act as a router between my private LAN and the internet? I have added Router 003 option to DHCP and I see that each clientshows DFG defined when queried via ipconfig /all However, the clients will not browse internet. IP address in Router 003 is defined as the private address of the server, in this case 10.10.13.21 What am I missing? Thanks for any and all help.Gary Douglas, President
NetWorking!, Inc.
eansor@yahoo.com