Check Presentation Compatibility : Presentation Properties « Introduction « Microsoft Office PowerPoint 2007 Tutorial

1. Microsoft Office PowerPoint 2007 Tutorial
2. Introduction
3. Presentation Properties

Click the Office button, point to Prepare, 
       and then click Run Compatibility Checker.

View the compatibility summary information.

Select the Check compatibility when saving this presentation check box.
       Click OK.

1.11.Presentation Properties
	1.11.1.	View and Edit Standard Presentation Properties
	1.11.2.	Customize Properties
	1.11.3.	Check Presentation Compatibility