Internet Connection Sharing problem

Hi,

I had ICS working on my setup fine, then we got a new router (BT Homehub). Now, with the same settings, the internet won't work on the client computer - I can share files fine, but the internet won't connect.

The setup is pretty simple; my main computer connects to the router via wifi, and the client computer connects to that via ethernet.

I googled this problem and the only thing I could find was that the router's IP address might be 192.168.0.1 which conflicts with ICS, but I've checked that and my router's IP address is 192.168.1.254.

Does anyone have any suggestions?