To use Bluetooth in S60 emulator you have to install BT driver. After some customizing emulator will use your hardware - Bluetooth Dongle.
If you try to customize it by yourself (without installing driver) in purpose to use Bluetooth Dongle, than, for sure, emulator will die.
If you have S60 3rd Edition FP2 SDK, the BT driver will be located at “<S60_SDK_installation_directory>\S60Tools\S60Bt” directory.
But if you have S60 3rd Edition FP 1, you need download it from here
The installation procedure is described in this distribution package as *pdf.
After that you need to start emulator, open it's settings, and at PAN tab set HCI to USB, then restart it. Everything is described in detail in previous guide.
I’ve already touched on such a deal in my nokia blog