Slightly weird thing, I've had limited success using a Cat 5e cable from the PC to the network port, and CAT6 cable from the patch panel to the router (any other cable combination results in nothing). Limited success in that the connection is intermittent - Vista will alternate (around every second) between 'LAN cable connected'/not connected. At the command prompt, using ipconfig - if the timing is right it will show LAN1 connected with a 169... address (not the 198.162... address I was expecting from the router), if the timing is not right it will just show LAN1 as not connected.
Any ideas? I'm suspecting some kind of dodgy or non-standard wiring, but would be good to get some feedback from someone in the know before getting the sparky back.
An aside, we are still waiting for internet/phone to be connected (TelstraClear, 2+ weeks wait now, another story), but I would have thought the internal LAN network should still work without the WAN side connected.