Basic question, but I wanted to make sure before I did this: My wife has upgraded her old iPhone to the 3G iPhone. I was wanting to hack the iPhone so I can use my company AT&T (non-iPhone) cellphone SIM with her old iPhone. I'm not really that interested in hacking the phone to use other applications. If I just use the PwnageTool, will that unlock the old iPhone so I can use it with a non-iPhone activated AT&T SIM? Is there a better way to do this besides using Pwnage?