I currently have a G3 iMac (2001 blue firewire). I am going to buy a new Powermac for me (Yea Ha!), give the G3 to my son for his room, and get an ibook for my daughter. My question is airport, since I would like all three machines to be able to use the cable modem, but don't want to run wires. 1. How do I tell if the G3 currently has an airport card. I do get software updates for airport, but am not sure if the mcahine even has it. 2. Which Airport base station do I need? The one with or without the antenna. 3. Do I run the ethernet cable from the cable modem to the airport base and that's it? 4. What sharing settings for the 3 computers? Thanks for your help. I've learned a great deal reading this forum, and it has helped greatly in making my buying decision.