Just for the record, I tried getting the Nokia tablet online using a T-Mobile Dash (WM5 AKU3) and PDANet.

I have a registered copy of PDANet and turned on the Bluetooth DUN option.

The tablet could see the DUN profile on the Dash, and I could pair with it. But whenever the Nokia tried to establish a connection, it failed.

After digging a bit, it seems that the Dash returns ERROR in response to any attempt to send a dial command. Even from a PC, PDANet always complains that the "modem is busy".

I emailed June Fabrics and was told that the Dash is incompatible with PDANet and unsupported.