HI. I don't know if this is the best place to post this, but I have a question. Can I use my Surface 2 RT tablet as a second screen to use with my windows pc? And if so, can it be done by Wifi or to I have to use a cable? I know you can connect a monitor to the tablet and use that, but I want the tablet to be the second screen and receive the image from my desktop. Greetings.