Go here and read the descriptions of the various parts you will need: http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore?family=Accessories&subCategory=AirPort The Extreme (802.11g) parts seem to all be compatible with the older (802.11b) parts, but they kick into slower mode if one is present. so unless you set up an all-extreme network, you could go with older parts (802.11b) for less money. And Jaguar lets you share your Airport/network connections; data going over the air can appear at the ethernet (1000baseT) connection. tony melvin wrote: > Hello, > > I have a new 1 gig mac with the airport extreme > possibility. > > I also have a Ibook with a normal airpot card. > > If a was to buy an airport extreme card could I use my > airport extreme enabled mac as a router and surf on my > Ibook? Or do I need the new airport basestation also? > > Anyone have any thoughts or experiences? > > Thanx in advance > Tony