IP Routing

I have a Red Hat Linux 6.2 machine with two ethernet cards that I plan to use as a router between two networks. I was hoping somebody could help me with this because of my limited linux experience. What options do I need to set in my kernel configuration? Is it just IP Advanced Router and Optimize As Router Not Host? Also, are there any commands I would need to issue at boot time? If so, would these be arguments I pass to the system at the LILO boot? In addition, how would I appropriately set up a routing table to do the routing between the two networks? Thanks for all the help.