How to Get Bluetooth to Work on BootCamp 3.0 Windows XP
For a couple of days, I couldn’t get my Bluetooth mouse to work in Windows XP with the BootCamp 3.0 drivers which was quite frustrating since I am dependent on the mouse when running my Windows applications on MacBook Pro. I searched all over Google and found the solution below. However, before starting the process stated below, I uninstalled the Bluetooth device in Device Manager along with the HID Compliant Mouse to get this solution to work.
Quote http://discussions.apple.com/thread.jspa?threadID=2001613&tstart=0
1 – Load the ‘Add a device’ dialog for bluetooth
2 – Wait until your device is listed and just select it (highlight only)
3 – Right-click (or press ‘Alt+Enter’) the highlighted item and select ‘Properties’
4 – Go to the ‘Services’ tab and wait until it lists a ‘Drivers’ check box
5 – Place a check mark in the box and click ‘Apply’
6 – Click on the notification balloon that pops up on the right end of the taskbar to watch the progress of installation (it will probably say something like ‘Windows Update..’
7 – When done, your device should disappear from the list and should now have functionality (although from my experience not exactly perfectly consistent pairing).
This works on my MacBook Pro (late 2008 unibody)