Making objects animate in PPT is really not that hard. What version of PPT
are you using?

I'm assuming you have at least XP!

Here's a start. Go to autoshapes  more autoshapes and find the clipart that
looks like 4 pieces of a jigsaw. Ungroup the shape to get 4 seperate pieces
and apply an "after previous" peek in animation to each piece. See if that
looks right

Getting a picture on the pieces is not as easy as you might imagine! Set the
background as a picture (format background>fill effects >picture) place a
plain rectangle over the slide covering the picture and then with the shape
right click > format autoshape>color>background. If you get grey instead of
the picure apply a blank master to this slide.

With these basics you should be able to improve the look with other
animations or motion paths

Hope it works!

Daniel,

I have a sample presentation that has a couple of slides that you might be
able to use.  The best one has five pieces with text on them that you can
change.  Already set up to animate.  Holler back if you want it and I will
see about putting it up on my site.

Daniel,

I have some some sample presentations describing how to draw and animate
jigsaw puzzles.  But they are in German (though I think the pictures are
quite clear, even if you don't understand the language) and they are
currently not available on the internet.  Feel free to send me an e-mail to
us "at" ppt-user "dot" de if you want them, though.

Best regards,
Ute