The easiest way to get those drivers is:
1. Download and install latest Apple Boot Camp from
http://www.apple.com/macosx/bootcamp/
2. Browse to Macintosh HD->Applications->Utilities
3. Right-click the "Boot Camp Assistant" and select "Show Package Contents".
4. Go to Contents->Resources and click the DiskImage.dmg to mount it.
5. Find the "Install Macintosh Drivers for Windows XP.exe" and copy inside your VM.
6. Run the file. In a short while, all necessary drivers will be installed. Reboot
PS: We can't redistribute Apple software, that is why you don't have bluetooth drivers by default.