Simple routing w/ server 2003

I am essentially having an issue with Server 2003:

I have a Comcast Cable router going out to a server, and an additional cable going to my switch from my NIC.

Comcast IP: 10.1.10.1
Server IP: 10.1.10.2
Server 2nd IP: 192.168.0.2
Client IPs are 192.168.0.101-192.168.0.140, static set.

If I disable my 2nd NIC, I am online on the server. If I enable it, I am offline, but can connect from workstations to the server.

Currently, all computers are online since i added the following routing table:
Interface: WAN
Destination: 0.0.0.0
Network Mask: 0.0.0.0
Gateway 10.1.10.1

naturally, all of my systems can get online now, but none of them can talk amongst themselves.

Anyone care to help?

 

Huh.

On a lark, I went thru some more things, and now it's all up and running, same config. I pinged each PC and they came ALIVE!

awesome.