I made an IR pen and a low cost whiteboard and now I have started working with your sample to code experiement with multi-touch.
Johnny I have often sung your cinderella story how the single guy in his lab who gave away his ideas and code and had it come back to him as millions of youtube views, video responses, and invitation to TED.com, and the sweet job with the big boys. Very inspirational! I'm so happy for you.
So while your at it, I want to use Windows 7 in my living room with my hands to use mouse/hand gestures to browse the web, run my OS and interact with my media. I'll look for your "how-to" soon