OK everyone.. I'm looking to eventually (like 97 posts from now) trade my 16GB iPod touch for an 8GB iPhone and I am currently an AT&T customer. Now.. what I'm wondering is... I want to use my current SIM card with the iPhone and I DO NOT want the data plan from AT&T (I have a ton of Wi-Fi spots near me).. What would I have to do to achieve this? Can I just get the iPhone (without activating it) and use something like ziPhone to SIM unlock it, pop my SIM card in and I'll be good to go?