Chiptech, any router you get will be able to route your NTL connection to any computer you want and if you want to go for Wireless then you can add 4 pc hardwired to it and up to 64 (really 32) pc's wireless.
if you want my personal advice this router would do just the trick
http://www.ebuyer.com/customer/produ...duct_uid=64620 it has a printserver on it as well so you can just print from both pc's without having either of them connected to a printer.
you might be able to find cheaper routers on Ebuyer...okay I know you hate them but I have to say I never had a problem with them at all.
if you want you could go for a Belkin router but I think most of the people would lynch me for even suggesting it, but benefit with belkin is lifetime waranty
so if you go for Belkin go for the F5D7230uk4 which is good