Tablet PC with Acrobat

I am an engineering professor, and often give lectures with notes that are in a pdf format (generally created via MS Word since there are lots of equations). I convert the nodes to pdf since it is easy to distribute to my students via the web, and I can use a full screen view during lecture.

I recently purchased a tablet pc. I also upgraded to Adobe Acrobat 9 Pro. What I would like to be able to do is the following: While in full screen mode in acrobat, use my tablet pen (or "pencil" as Adobe refers to it) to be able to write on the current slide. That is, make comments, draw pictures, add notes, solve a problem by hand, etc., right on the page.

I found that I can write on the page in normal view mode using the Pencil Tool under commenting. However, is it possible to do this in full screen mode?

Thanks in advance for any responses.