Create Your Own Interactive WhiteBoard for Less Than $100

So, schools and companies always have a problem called “budget”, right?
An interactive whiteboard (fo which the most famous representatives are perhaps Smartboard and the Promethean Board) can cost thousands of dollars.
Well, Johnny Lee has been doing some research on using the fairly innexpensive Wiimote (the remote for the game console Nintendo Wii) and an interactive pen as input devices to turn any projected screen into a an interactive whiteboard-like experience.