Plug in the USB cable to your phone and change the USB connection type to "Internet pass-through" (that's all I had to do) - bring down the notification drawer if it doesn't prompt you to select the connection type automatically. You might want to turn off 3g and wifi, but I'm pretty sure once it's on Internet pass-though, it'll bypass wireless data.
If you have any problems you might want to check this thread (hope it's ok to post the link):
Code: Select allhttp://androidforums.com/2170487-post5.html