Hello, I currently own a G4 PowerBook running OS X 10.2.8 (archaic, I know) which I use as a word processor. I want to set it up to recieve my friend's 802.11 wireless signal (with his permission), which is sent out by a base station tied to a Windows machine. Two questions I have: First, will an Apple PowerBook and Airport card be able to recieve a signal from a Windows machine (I don't see why not, but...)? Secondly, I seem to only be able to find the AirPort Extreme card on the Apple Store. Will the Extreme card plug and play with my notebook, or not? Are there any good third-party cards that I can buy that will work well if not? Thanks!