FE is your man here and I am sure he will give some good advice.
Personally, I use the Buffalo Airstation 54g (802.11g) and cardbus for the laptop. This comes in at only £130 for both and is pretty fast.
Set up is easy but beware of the fact that the router does not have a built in modem and needs to connect to your existing one. This is fine so long as your modem has the RJ11 type output cable as the router will not accept a USB connection.
As to a laptop, take your pick. I would hesitate with the built in wireless at present (Centrino) as I feel they are not all that they are cracked up to be - others may have a different view. I use the cardbus in a Toshiba 2.6 P4 and have no probs at all.