I'm really desprete...I'm going to buy a iPhone this weekend and I was going to use T-Mobile's SIM, I was actually going to get on my mom's plan. If I bought a iPhone and opened it straight out of the box, what exactly are the step-by-step instructions on how to unlock, activate and jailbreak to where I can use T-Mobile's service to use my iPhone as a phone? I wasn't going to use the Phone for anything extreme, just use it for mainly emergencies, I was also going to use it as a iPoT, with applications and stuff on it. Please...PLEASE! Help me!