BH4-X is the only driver for testing Bluetooth by CodeWarrior and a Dongle?

[Atreo]

BH4-X is the only driver for testing Bluetooth by CodeWarrior and a Dongle?

Hello.
I'm trying to test Bluetooth applications between Symbian phones and CodeWarrior emulator but I can't by now.

Do you know if the CodeWarrior can work directly with a dongle?

I founded some references to this driver BH4-X (driver for USB adapters enabled with Bluetooth wireless technology).
Do you know if this driver is really needed for being able to use CodeWarrior emulator as a bluetooth device?

Do you know if it's free?

Thank you very much for your attention and help.

Atreo.