Hello, I have just purchased a AT&T w580i Go Phone. I assume right now it is locked and I know it is AT&T branded. I will be traveling to Germany, Spain, Portugal and Morocco this summer. I plan on unlocking the phone after getting full understanding of what to do so I can be sure I don't brick my new phone. After unlocking I will purchase a SIM on arrival in each country to reduce my airtime expenses by avoiding roaming charges. I note that there are different files for European and US phones. What files should I be using to set my phone up? Are there any considerations I should be aware of in my plans to use this phone in Europe and Morocco? Thanks.