Possible to Unlock and ATT device to Work on Sprint Network?

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http://androidforums.com – I just got my hands on a Samsung Galaxy Note because I was told by the sales man that putting in a sprint sim would make it work... Needless to say this is not the case. So it there any way to unlock the phone so I can use it with sprint? I really love this device and I don't think spring will be coming out with anything like it anytime soon. Someone please gove me some good news?!? (General)