Acho que a opção "Navegue em um quiosque (tela cheia)" funcionaria.
Setting up a slide show to run at a kiosk allows you to control whether mouse clicks anywhere on the screen advance the slide. For example, if you want the slide show to be viewed at a specific pace, set automatic timings and then set the slide show to run at a kiosk. To give users additional control, you can add navigation, such as hyperlinks or action buttons, to your slides.
On the Slide Show menu, click Set Up Show. Under Show type, click Browsed at a kiosk (full screen).
Note If you set up a slide show to run at a kiosk, remember to also add automatic timings or navigation hyperlinks or action buttons. Otherwise, the slide show will show only the first slide.
Tenho certeza de que também funciona no Powerpoint 2007 e 2010 (embora eles não sejam mencionados nessa página).