How to unlock Htc G1 for AT&T

Is it possible to unlock the Htc G1 phone to use on AT&T for free?
If so please let me know, because I have a G1 but I can't use it.
Thank you.

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have you tried calling t-mobile? it seems they are the nicest when it comes to that. other than that you can wait around and maybe someone will do a random give-away and you could win one, or pay $10 and get the code. ya never know someone might just feel nice and do it for you when they read this.
Good luck.