Once your MessagePoint product is installed you can click Start > Control Panel > Display. On there you click the Screen Saver tab and make sure that MessagePoint Std is selected as the default screen saver.

Click Settings and then Browse to select the Microsoft PowerPoint presentation on your local system. Also you can specify if the running screen saver should be ended on mouse movements and keyboard actions. Typically a screen saver is ended when the mouse is moved or when a key is hit on the keyboard. But sometimes it is interesting to turn off this feature if your screen saver presentation contains hyperlinks to external documents or web sites that you want a user to click on.