I got my own 3Com Office Connect wireless 11g cable/dsl router.
Model is 3CRWE554G72T.
I am running my main pc & myth-tv box through the ethernet ports on it (4 total), one pc in the next room by wireless, and occasional access by wireless from a laptop downstairs.
As far as I can remember, the wireless router came with a usb wireless dongle - I use this on the pc in the next room. For the laptop, I got a Sweex wireless pcmcia card from SVP (
www.svp.co.uk) the same time I was getting some blank dvds.