First off, I'm doing this on a MBP bought in June of '08, running Windows XP in VMWare fusion off of my bootcamp partition. Also, my Logitech MX Revolution mouse pairs up perfectly fine. Well, my MX Revolution used to work on my XP partition a while ago, but I hadn't booted up directly into Windows for a while and was just using VMWare Fusion. I recently installed a new game on my XP partition and used bootcamp to directly boot up into it, but it wouldn't work. I kept trying to use the Bluetooth Devices program in the Control Panel, which kept leading me to using the "Add Bluetooth Device Wizard." I keep using "Don't use a passcode" and it tells me it pairs (when I press the connect button on the bottom of the mouse), but the mouse does not work. I then kept searching for updates for the Apple Bluetooth drivers, but everything was up to date. So I decided to go into control panel and go into Add/Remove Programs and tried manually uninstalling that said "Bluetooth Drivers." Unfortunately, I may have screwed something up here haha. I can't find anything to replace those drivers I uninstalled now. I think I've created more problems than I've solved... Also, when I try and use Logitech SetPoint and use the connection wizard, it just tells me "Please connect Bluetooth USB device" so it's obviously not recognizing the internal Bluetooth receiver (and I made sure it's connected in VMWare, AND I've tried it booting directly into the XP partition!) Any help guys?! In the end, I just want my mouse to pair with my XP partition!