I am trying to route the wireless internet from one computer, through a router, onto a local network which should be accessible by two other computers on the same network. Graphically, my problem can be explained with the following diagram:
Where the internet goes into the main router which then transmits wirelessly to the first computer. The router then allows this first computer to connect to either of the two machines that are also on the network. This already exists and is working.
The problem is that I have absolutely no idea on how to share the internet between the two other computers through the second router whilst keeping its status as a local network.
For references sake, both routers are BT Home Hub 3s, C1 is a Windows 7 machine kept on the local port 192.168.137.52, C2 and C3 are both Linux Mint 15 machines on the ports 192.168.137.2 and 192.168.137.4 respectively.
If there are other areas that remain vague, please comment and I'll try to flesh out the details as much as I can.