Windows Sever 2003 Routing

Hi
I need help configuring a Server running Windows Server 2003 to route traffic between 2 IP address ranges.
The primary network runs on a 10.2.3.*. Everything in our organisation runs on this range.
The server has 2 NIC's and I have assigned a 10.2.4.* IP address range on NIC 1 and assigned a 10.2.3.* IP Address range on NIC2.

I have installed a Windows XP machine and gave it a static address of 10.2.4.*.

How do I enable routing on the Server so that the PC's 10.2.3.* IP range can see the 10.2.4.* network and vice versa.
I have enabled Routing on the server but I still routing is not happening

the NIC's are configured as follows:
NIC1 : 10.2.4.1
NIC2 : 10.2.3.97

PLEASE HELP ME...Is it possible to route traffice without buying a router.