You can find the .exe file based upon the instructions in the thread. When you want to copy it to your vm, just drag and drop it and it will copy to the VM desktop. Then install.
The question I have is, if I am using Bootcamp, and using PDM to access bootcamp, and I already installed the BT drivers in Bootcamp, do I have to do this AGAIN while in PDM to get the BT to work?