Hi I just received my ibook g4 with airport extreme card installed. I want to connect to my wireless internet connection on my windows xp computer. I'm having trouble though, and dont' really understand why. I have comcast broadband internet, and a netgear 108mbps wireless firewall router (product #wgt624na). Do i need anything else? Do i need an airport base station thing? if i don't, why am i not able to access the internet? I would appreciate help. I've already read a ton of posts regarding this and they just don't seem to be helping. Thanks.