Never even touched on wireless before, so need a pointer off anyone "in the know".

Basically, bought my missus this laptop:

http://www.ebuyer.com/product/128944/product_info/rb/0

However, now we need a wireless router to enable use of a laptop while I am having a shite

I don't want to spend a fortune, but what do I need?? I think it's NTL 1 meg broadband. I know the Downstairs comp runs off the telephoen cable and a modem, but that's about all I know