Help with network settings

Hi all.

I am try to configure a box with RedHat Enterprise Linux 4 on it to be
a router/firewall and I am having difficulty wrapping my brain around
how to configure it. Here is a picture of how I would like it to be
setup and how I *think* it should be setup:

http://www.bonniedoone.com/network.jpg

I have two Win2K webservers with public IP addresses. I want them
behind a dual-homed Linux Firewall/Router. Please note that the Win2K
webservers have PUBLIC IP addresses. They are not being masqueraded or
NAT'ed. How do I configure the networking on my linux box to accept
data from the webservers connected through its eth1 and route them to
the Internet which is connected on its eth0? If the picture above does
not clearly depict my question, please let me know and I'll try to be
more specific. Thanks for any help!

Matthew