Route Windows machine to Linux Gateway

I have a Linux Server to which is connected two NIC – one for Internet and VPN (10.0.0.) and the Other for In-house network (192.168.1.0).

I have a single Windows box (98 or ME) which is connected to the 192.168.1.0 network which NEEDS to get out to the internet, but I have been unable to figure out how to set up the route on the Windows box so it can get there.

Everyone else on the Linux box can get out.

Any ideas or suggestions would be appreciated.