At first I didn't have the on off button in my networks setting for the tethering. I figured if I dowloaded a crack for it from cydia I'd be able to tether for free. So I dowloaded Internet Tethering from cydia, something about mobile configs, and at the end of the guide it said "WARNINGS: AT&T could be charging you. Nobody knows. Do this at your own risk." what the heck is that suppose to mean.

Can ne one help me get free tethering from my iPhone 3Gs.

Thanks in advance.