I have 10.3.3, D-Link Bluetooth adapter and a Sony T68i. According to OSX help:
"If both your computer and cellular phone are Bluetooth-enabled, and you have paired both devices using the Bluetooth pane of System Preferences, you can use Address Book to place outgoing telephone calls.
1) Click any phone number label, such as "home," on an address card.
2) Choose Dial from the pop-up menu, then use your cell phone to listen for the person you're calling to answer.
Click the Bluetooth button in Address Book to search for paired phones that are within range.
For more information about pairing Bluetooth devices or using Bluetooth, open Bluetooth File Exchange, located in Applications/Utilities, and choose Help > Bluetooth Help."
When I open Address Book and try that, I can see "Dial with T68i" but it is shaded and won't allow me to choose it?
It does allow me to iSync as a "paired device" so I know the bluetooth is connecting. I have also set the Address Book to use the number format of 555-123-4567 to make sure it wasn't a problem with the phone recognizing the number format. The little bluetooth icon in Address Book is blue and when you mouse over it, it says "Connected <T68i>