But I have a wireless network sharing NTL BB using a router. In my case it is the Actiontec NTL pack, which I got cheap at an auction.
The way mine is structured is that the broadband 'box' is plugged straight into the router. I then have my original wired connection, which used to run from the BB 'box' to my pc, running from the router to my pc. Anybody else in the house (wife and 2 daughters when home from Uni) can use either the usb wireless adapter that came with the Actiontec kit or the built-in wireless networking with one of their laptops.
This means that:
1. My machine does not have to be switched on for others to access cable BB.
2. If the wireless access were to have a problem I could still use the wired connection. (Though this has never happened yet!)
3. My machine, in using a wired connection, should have fewer speed limitations, although I have not noticed any real difference between machines.
My elder daughter in her student house is sharing Telewest BB using just a wireless router and no wired connection. Again the BB box is connected directly to the router and then each person accesses BB through their own wirelss adapter, either built in or USB.