I have tethering enabled on my iPhone 3G S, and while it works in 10.5, it doesn't work in 10.3 or 10.4. I try to plug it in, and nothing shows up in the Network preferences. Yes, tethering is enabled on the iPhone. When I try it through Bluetooth it doesn't give me the option to use the iPhone to connect to the internet. Will it even work under 10.3? If so, how?