|Setting Up Bluetooth DUN for PdaNet|
If you haven't installed PdaNet on your Blackberry phone, please open the phone's browser and go to http://pdanet.co/bb and install it.
Before you turn on Bluetooth DUN (Dial-up Networking) in PdaNet, you need to make sure Bluetooth is set to discoverable on your BlackBerry and that the native Dial-up Networking service on the phone has been turned off. To do so go to Options->Bluetooth, then bring up BlackBerry menu and select "Options". Now select "Yes" for "Discoverable" and scroll down untill you see "Dial-Up Networking", you must uncheck it.
If you only use Bluetooth DUN to go online, you do not need to install PdaNet on the computer side. The Bluetooth DUN feature also allows you to connect from Mac, Linux or any other Bluetooth compliant devices.
On your computer, bring up the Bluetooth setting window that lists devices nearby. Make sure that your device shows up in the list and is paired. Open this device and look for services provided by this device. You should see a "Dial-up networking (DUN)" service. Select it and connect to this service. (If it shows a dialup window, enter 123 as the dialup number.)
Depending on your Bluetooth software/driver, the above user interface may be presented differently. Below are screenshots taken from WIDCOMM, IVT BlueSoleil and the built-in Windows XP SP2 Bluetooth settings respectively. If you are using a Macbook, simply google "mac bluetooth dun setup".
Windows XP SP2 UI