Darey said:
Cheers, is it possible to do that with a router though as I have 2 anyway, and how hard is it to sort out?
Like ste_bla said, turn off the DHCP server on the second router. Connect the two routers together using a patch cable between a LAN port on the first router, and a LAN port on the second (going into the WAN port will only over complicate things - double NAT isn't nice).
Once you've done that, the second router is acting as a switch - plug PC's into the LAN ports on either router and away you go.