I use Telewest Broadband (Blueyonder) which is £25 per month if you have their TV package.
I also have a wireless network set up using a Netgear FM114P wireless router and an Actiontec PCMCIA card in a laptop. My desktop computer is connected to the wireless router via a network cable and the router has a built in access point for the wireless card.
If you are going down the wireless network route then I would go for a wireless router as that way all of the computers can access the internet without having to have a gateway computer switched on. Also, if you go for the router then I wouldn't bother buying a wireless card for a desktop machine if it is going to be located next to the point where the broadband comes into your home. This will cut down on the cost.
As for selecting Netgear products, if you do a search in the Consumer Forum on this site for Netgear, you should find some very favourable reports on Netgear's customer service. This alone is worth a bit extra.
Hope this helps.