Thanks for the input! I agree that it sounds pretty unlikely to work also because amazon blacklists kindles by serial number so that is probably the way it's identified on the network. it's too bad since I've already paid the premium for the cell service and now can't use it, but I can't expect amazon to cover every situation. it would be nice if amazon would sell me a kindle 3g for the price of a wifi
I still might try it just for kicks but I think I'll wait a couple of weeks at least - I'll definitely post back and let you guys know what happens if I go through with it.