
to CF
The WRT54G (& most other broadband routers, apart from some ADSL ones) can only use ethernet - not USB.
So yes, you will need to use ethernet to connect the modem to the router, & ethernet [or another wireless adapter] to connect the router to the main PC.
Ethernet cards are v cheap (tenner or less), & are very easy to fit.
I've got a WRT54G myself & it's a great router
Once you've got your router, you should have a look at this thread about wireless security

-
http://www.cableforum.co.uk/board/showthread.php?t=8435
Oh, & not quite on topic, but I'd also recommend Robin Walker's site, for a whole load of info on cable broadband:
http://homepage.ntlworld.com/robin.d...ips/index.html