I used CP in class today just to give a regular slide show and use the pen capabilities. Once I got the projector figured out it worked pretty well. My only complaint is that I cannot see the instructor notes in powerpoint (even with the display toggled). I can see them in CP, but this makes editing them problematic because you basically have to redo the instructor notes for the entire slide. Maybe this issue is addressed in the 2007 add in. For a free program I am satisfied with its quality, ease of use, and documentation.