Bluetooth Configuration for MS Windows XP Service Pack 2 or higher
Select Start -> Settings -> Control Panel -> Bluetooth Devices -> COM ports tab:

Click Add.
"Add COM port" dialog window will be launched:
You should select "Incoming (device initiates the connection)" item, as shown on the picture above.
Click OK.
In the "COM ports" tab a new entry should appear:
Click OK to close the window.
COM port settings were successfully configured!