Hello. I have a problem, based on my old G3 iMac. I want it to be wireless, so that I can not have any cords running to my study. I'd like to plug Airport Extreme in at my Living Room (where the internet hookup is) and just have it send the signals to my study, where both my MacBook and my G3 will receive them. The G3 does not currently have an airport card. It is a 333mhz G3 iMac with a1.2 USB. -How much will it cost to have an airport card installed? (parts and labour) -Is there a device that plugs into USB or ethernet to pick up the signals, if so, will it work with a 1.2 USB? What else would you recommend?