[Horace]

If I were you and you're just planning on using wireless connection for the internet as opposed to for example, streaming movies from / to PC's on a network, you're probably better off just getting a wireless G router on its own (the WRTG54 is about £40 from Ebuyer). The card you're using now will be fine. The card that comes with above router uses USB to connect to the laptop as opposed the card you're using now which is almost certainly PCMCIA, which is a much neater solution than a seperate USB card. If need be you can get a seperate PCMCIA card later, should you need the extra speed for networking.