To create your own IR-LED Pen: http://tinyurl.com/bdqjzx4
Buy your own IR-LED pen here: http://www.penciil.com
Download the software here: http://mikepieters.com/WiimoteWhiteboard_126.96.36.199.zip
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.