Thanks for the gen everyone.
The reason why I haven't connected the ethernet cable from my cable-provided modem is that the port marked 'Interweb' on the router isn't ethernet (RJ-45), it's RJ-11.
I may end up going for the WCG200 or WRT54GC as they are compatible with cable, which means my ADSL router will appear on Ebay pretty soon.
Cheers,
Fox 4 (mmmm, pork pies)