How do I setup the bluetooth connectivity for GPRS data connection with my Blackjack ?

I did setup bluetooth connect and I can transfer a file from my BJ to the 810 over bluetooth.

Next I setup the GPRS settings
Settings -> Control Panel -> Cellular provider setup Wizard

Selected country (USA) -> Cellurar Operator : AT&T Internet

The below are the setting for the Connection
Acces POint Name : wap.cingular
Dial Up number : *99***1#
password : doesn't show (I guess its CINGULAR1)

Under advanced : Use Proxy is unticked
IP Addresses tab
Auto Retrieve IP Address checked
Auto-retrieve DNS checked

Other Tab
Allow plain text login checked
Use PPP compression checked

After all this - when I select the connect
it says

Connection failed to phone to blackjack
Try Again ? OK Cancel

Just cant get this wot work. Has anybody some tricks up their sleeve to get this going

Note : I also tried changing the
Dial Up number to *99#

That didnt hep either.

Tahnks for any help in advance

Ok, while researching I came across this nugget of info ...

"The N800/N810 will be able to use whatever data connection you have on your phone, be it GPRS/EDGE or HDSPA/3G. You will still be able to receive calls on your cell. Any phone that supports the Bluetooth DUN profile will work. Only some recent Windows Mobile devices have intentionally disabled DUN (so the operator can lock you in further), you might want to check that but otherwise you're probably good to go."

On the other hand I hear that the Blackjack (and other WM5 devices) only have Bluetooth PAN, Is this the reason why I cant get BT tethering to work on my BJ from the N810 ?

Any pointers ?