There are several posts about this here, here and here.
I understand that Microsoft has their own tool, what would be involved in writing one? Or would it be something specific to the hardware?
It's not possible. MS uses a patched version of the operating system that supports VGA output, so there's no signal to obtain from the USB port.
It's not possible. MS uses a patched version of the operating system that supports VGA output, so there's no signal to obtain from the USB port.