For a Microsoft PowerPoint 2001 for Macintosh,
PowerPoint 98 Macintosh Edition version of this article, see
188732 (http://support.microsoft.com/kb/188732/).
For a Microsoft PowerPoint 97 for Windows version of
this article, see
189547 (http://support.microsoft.com/kb/189547/).
For a Microsoft PowerPoint for Windows 95 7.0 and
earlier version of this article, see
179539 (http://support.microsoft.com/kb/179539/).
PowerPoint 2000 does not allow you to password protect your
presentations. You can password protect VBA projects that are a part of your
presentation, but not the presentation itself.
This is done to
maintain file compatibility with PowerPoint 97 and PowerPoint 98, which also
does not support password protection.