PowerPoint 2002 presentations can be read in PowerPoint 2000, but some
features won't work. The most prominent thing that changed in 2002 is
animation, so if you use animation in 2002, there is a good chance it
won't work in 2000. If you have 2002, you can set the preferences to
disable the new features so your presentations won't include anything
that won't work in 2000. If you have 2000 and are receiving 2002
presentations, you can get the new PowerPoint 2003 Viewer for free. This
will work as long as the presentations don't contain any macros.
--David
David M. Marcovitz, Ph.D.
Director of Graduate Programs in Educational Technology
Loyola College in Maryland
Author of _Powerful PowerPoint for Educators_
http://www.loyola.edu/education/PowerfulPowerPoint/