And if you drive PowerPoint on a Mac, see this
From Microsoft:
If you use versions of PowerPoint prior to X on a pre-Mac OS X Mac, see Q297238 OFF2001: How to Optimize Your Macintosh System Configuration
Also, visit The Mactopia Downloads page where you'll want to download and install the Service Release 1 patch if you haven't already done so.
And of course, drop down to the MAC FAQS section of the main PowerPoint FAQ page where you'll find lots more Mac-specific PowerPoint help.
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