To get the bluetooth running you need the file hid2hci.exe.
Open the Command (or Run) prompt (enter the folder where you saved hid2hci.exe) and type: "hid2hci.exe 05ac 1000"
Repeat this everytime you start the computer (or make a shortcut in the startup).
When you download those, you'll need to install the Boot Camp Control Panel in order to get things working with the keyboard. If you try to run just the executable for the keyboard it won't work.