I've just bought a US Robotics Broadband Router and it was a piece of pie to get up and running on the PC.
I'm on the Blueyonder 1Mbit broadband service and they like you to register your network cards MAC address. Simply clice on the 'Clone MAC Address' button and thats it.
Hopefully going to get the Amiga linked up to it soon (as soon as I've run the network cable across the length of the house and up the stairs, without it showing of course. :-?
-john