Magic Mouse in Boot Camp

I had trouble getting my Magic Mouse working in Boot Camp, and found this Apple Support Article saying you may need to re-pair the mouse in Mac OS before it can pair properly in Windows. That still didn't work, but I found these steps that did (plus a reboot):

This is easiest to do when you have another mouse already working with the system...

1. Install your bluetooth support and service packs for XP
2. Go to Bluetooth devices from your control panel or system tray
3. Connect the Magic Mouse and wait until the machine settles down.
4. Click Add..
5. Check my device is set up and ready to be found
6. Click Next
7. Click the device from the list - it should appear as the address of the mouse (looks like a Mac address)
8. Click Next
9. Don't use a passkey
10. Wait until the bubble appears saying to click here because a device is requesting your attention (or whatever it says)
11. Pass key is 0000
12. Click Next
13. Click Finish
14. Go back to Bluetooth devices
15. Click on the device from the list
16. Click Properties
17. Give the device a reasonable name (like Magic Mouse?)
18. Click Services tab
19. Check drivers for keyboard, mice, etc (HID)
20. Click Ok.

In my case I had to reboot before it would et me select the keyboard services.