This is probably a really easy question for all you experts (I hope!)

I am a complete Linux newbie. I have managed to install a dual boot system with windows xp and Mandrake 9.2. I have a Netgear WG311 802.11g wireless network card which works perfectly under windows. But my Mandrake installation doesn't see the card and I have absolutely no idea how to make it work. Any help would be highly appreciated, however it will have to be in simple terms that a life long windows/dos user will be able to understand!