I have a brand new Iphone 3GS. I need to unlock the phone for some planned overseas travel. I have only downloaded some small apps, I have yet to connect my phone to my laptop and sync it with itunes. What should I do? Should I use jailbreak? Unlock the phone before I sync it? Should I update to 3.1? I really don't need to use this phone for music...Any help for this newbie would be greatly appreciated...thanks guys !!