I've been searching the interwebs for 2 hours now for a bonafide method for unlocking the 1st Gen iPhone to work on T-Mobile, but with limited success. Some say that I need a tmobile SIM card, others don't even make mention of it. I need a top to bottom step by step method. What software I need, etc. I'm pretty computer literate, but this is scaring the crap out of me.