Question : Routing packets to different gateways

Hi,
A have a Windows NT acting as firewall (running Checkpoint firewall 1 using NAT) with 3 nics on it. One goes to my internal network and the others are connected to 2 different Internet connections. The question is: How can I route packets coming from one internal subnet - 10.1.1.0 mask 255.255.255.0 (NIC 1) to the first Internet connection (NIC 2) and from the other subnet - 10.1.2.0 mask 255.255.255.0 (NIC 1) to the second Internet connection (NIC 3)?

Thanks for your help

Answer : Routing packets to different gateways

thanks all...