Unlike previous methods, with the latest release of the BootCamp software, installing drivers for the Apple Keyboard, Wireless Magic Mouse, and Wireless Magic Trackpad couldn't be easier, as all the driver installers are nicely placed in a folder and are ready to go.
- Download the BootCamp 5.0.5033 software (http://support.apple.com/kb/DL1638)
- Extract the ZIP file somewhere (e.g. c:\temp)
- Drill into the following folder
- Install the drivers
The down side (if you consider it as such!) is that Boot Camp 5 only support 64-bit windows. For 32-bit Windows installations you'll need to revert to an older Boot Camp version and a more complex installation process.
The OTHER downside is that the "stuttering mouse" bug still appears to be there for me at least. :(