Best practice is to have all multimedia elements in the same folder as the
presentation, then import. When PowerPoint opens the presntation it defaults
to searching in its folder for any elements.
I highly recommend the PPTools Fix Links Pro for setting all paths to
relative paths (no path info when you go to edit >> movie). Check here for
details: http://www.pptools.com/fixlinks/index.html

Signature
Troy Chollar
TLC Creative Services, Inc.
troy at tlccreative dot com
www.tlccreative.com
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A Microsoft PowerPoint MVP
Host of www.ThePowerPointBlog.com
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>I have to move my presentation to different computers and folders and when
>I
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> path, but does not allow it to be changed)
> Thank you for your help.