windows 2003 and linksys router

I have a win2003 r3 with two nic’s one has a static IP address from my ISP. I want this card to serve as my connection to the internet as well as serve my web site. The other connection goes into my linksys router that will serve my wireless and wired client using Dhcp. The must be able to get out to the internet. I can’t seem to figure out what the IP addresses and gateway for the none static nic card and router should be.