On the Win-8 hardware compatability list, the BTD-V201 USB Micro Bluetooth Adapter, is confirmed compatable with Win-7.
However, it does not say it's Win-8 compatable. Says check with manufacturer, and their page does not list it as Win-8 compatable.
It doesn't say it is NOT compatable either. I would guess the Win-7 downloadable driver would work, but at this point I'd wait for confirmation, or choose one that is Win-8 compatable.
Nothing more frustrating that trying to get a hardware item to function properly, when you don't know for sure if it even is supposed to work or there is an interface driver available.