Hello, I'm minutes away from buying am AT&T HTC G1 online.. after years of using my Nokia 5100 I know next to nothing about usage terminologies. I just wanted to check that if a I buy an AT&T model from ebay, would I be able to just buy an unlock code and be able to use with my current carrier [Fido] and overseas? This might be a stupid obvious question, but I need to make sure its possible before dishing $400-$500 on it.. I'm really itching to just buy it now! Thanks!