Hello all, Total iPhone newbie here. I'm looking to get a 3G next week, and I would love to use the network to get online with my iMac, and save the $$ I spend on the local phone line + DSL. From what I've read here, am I right in thinking that the phone would have to be jailbroken + some program in order to tether? Will I be able to buy stuff from the app store if it's jailbroken? Is there a way to wirelessly link the iPhone to the iMac, to get online with the iMac? Does it make more sense to just have an air card? Thanks for your responses. I have read other threads about this, but they didn't answer these questions in a way I could understand! Thanks!