I've got virtually the same setup, NTL with a linksys wrt54g braodband router. Mainly a piece of piss.
Ensure you change the routers default name and set up some security, either using encryption (WPA is better than WEP) and/or mac adress filtering. Someone in my area has an unprotected (default setup) wireless NW to which I can connect freely and at will, hogging their bandwidth and browsing their files - I left them a note telling them how insecure they were but they havnt changed a thing!

a wireless warning

tonga.