There are many advantages of using the default Bluetooth drivers built into your Windows XP rather than the third party driver that comes with your Bluetooth dongle.
Here is a trick to make the windows to detect your unsupported Bluetooth device as supported Microsoft Bluetooth device.

Here I use DLink DBT-122 for example, which is not supported by Windows XP SP2 by default.

 Connect the dongle to USB. Windows will ask for Driver Disk. Click Cancel.
 Now goto Device Manager, there the DBT-122 will be shown with an yellow mark. Right Click on it and select Properties.
 In properties window, go to Details Tab, there it shows Device Instance ID value.

In the case of DBT-122, it shows USB\VID_2001&PID_F111\0011……..

Copy the USB\VID_xxxx&PID_xxxx part to clipboard.

Now open Windows\Inf folder and open the bth.inf file.
Find the line “Microsoft Wireless Transceiver for Bluetooth= “


And modify it to
Microsoft Wireless Transceiver for Bluetooth= BthUsb, USB\VID_2001&PID_F111

Save the file.

Remove the dongle and connect again. Hurrey! It gets detected as Microsoft Device.

That was a wonderful trick. Know what ? I had a motherboard that doesnot support Windows 98. There was no windows 98 display drivers shipped with it. I got an old Windows 98 driver for the similar hardware, edited it's inf file and added the VID and PID into it. The graphics card was detected and it is working properly. Thanks