I'm afraid I may abuse of your generosity here, but I do have another question (that's the reason for the mistaken category of the post you answered). My daughter just arrived in her International Student residence in Europe yesterday, where internet's only available by Ethernet. She wishes to reverse-tether, from her PowerBook to her Iphone (because of the cost of using Internet on her phone over there). I found some instructions about Internet Sharing, in System Prefs, etc. "From: Ethernet, To: Airport" Enable Internet Sharing, and all...She did everything, by the book (or so, she thinks) but nothing shows on her Iphone Wi-Fi Settings when she tries to connect... I also read that it could be done with a Bluetooth PAN, but I got lost, as I tried to follow the instructions here at home, after pairing computer and Phone, with a "rude" message appearing on my phone telling me to "forget that device". Can you help?