I recently got a 32GB PlayBook and I'm trying to get the Internet Tethering option to work on my Torch (w/ Rogers).
I select Rogers as the carrier, click next, it does "Authenticating" then "aquiring IP address" then fails. I had rebooted both the PB and the BB several times.
For the record:
1. WIFI is connected.
2. PB is updated to the latest software.
3. Torch is running the latest carrier OS and I've also updated to the latest Bridge
software as of this morning.
Do you have a data plan that is larger than 1GB. If not tethering isn't included. You don't need to tether anyways. You can access just about everything through the Bridge.
I have tethered on mine. Like you I choose my carrier and it worked. I wonder if you call Rogers and manually put the settings in. I don't know if being on BES is stumbling block also if you are.