I just found a great free app. It's called CloneBoard. We have been trying to figure out how to mirror the image of a tablet onto a PC that is hooked to the SmartBoard so that kids in math classes could work problems on the tablets and it show up on the screen and, therefore, the SmartBoard. We have also been trying to do it on the cheap. There are a million apps to control the computer from the tablet, but almost nothing to mirror it the other way around. Enter CloneBoard. When you open the app, it gives you a web address. If you go to that web address on your computer, you can watch what you are writing/drawing on the tablet.