No, nobody knows your subsidy code here. Just Motorola, Cingular (possibly, though not certainly), and perhaps some folks with 3rd party unlocking software.

Anyways, I would recommend you either get an unlocked GSM phone or you pay a 3rd party to unlock it (look for folks in Chinatown, etc to do this cheaply locally depending on where you are, or you can try one of the online places; I've never had a phone "illegally" unlocked so I'm not quite sure on where to do it though.)