Me and a lot of other iphone users are having the same problem. I believe someone know how to make the internet work through USB but I when all over the google (reads internet) and I couldn't find a solution.

YES YES YES, I when to :
alk blog: SSH to get your iphone online via USB cable

but it seen to work only with older versions not with 3.1.2

So please, help everyone answering this thread I'm sure God's iphone will bless you!

Thanks

Israel Leite