Sitting in my chair, laptop with Belkin Wireless PC card, which is talking to a Netgear MR314 Wireless router and 4 port hub. Connected to this is a desktop PC, and the whole shebang connects to Mr ntl's broadband box. Both PCs share the broadband connection, and the desktop doesn't have to be switched on to do it.
Been running this config for 3 months, only problem is the strength of wireless connection, which is a little weak where I'm sitting right now. Line of sight from notebook to router is through a bookcase at an oblique angle
Cost? from Dabs, router is £99 + VAT and Belkin PCMCIA card £46 + VAT. Bargain!