How to send LAN traffic to one Nic, WAN traffic to another?

Hello All,

This is for XP Pro.
I have 2 nics in my pc, NIC1 is just for the LAN, NIC2 is just for WAN.
However, when using anything WAN related, there is a few second pause as i assume it automatically checks the NIC1 first as it’s DNS is used to login to via. active directory.
Is there anyway to specify that any traffic to 192.xxx.xxx.xxx goes to NIC1, all other goes to NIC2???
Any help would be greatly appreciated.