LAN Routing in RRAS not working

[wawen]

I have a SBS 2K3 with 2 NICs. External NIC uses PPoE to connect to ISP.
Clients connect thru internal NIc to access resources.
I can access internet on server but cannot get clients to access internet.
MS Exchange is working ok. clients can send/receive emails.

Details:
External NIC
192.168.1.100
255.255.255.0
(no G/W)
(DNS points to ISP)

Internal NIC
192.168.100.1
255.255.255.0
192.168.100.1
(DNS points to itself)

Configured RRAS and enabled LAN routing but no luck so far.

[Zachary]

Your server should only have one default gateway setting. Your gateway should not be assigned to clients

The NIC2 setting should be:

192.168.1.101
255.255.255.0
<leave gateway setting blank>

Some more information here - http://support.microsoft.com/kb/837453