I believe that if you want something more complicated, you will have to
use VBA. Triggered animations will do what you want if you don't mind the
need for a click, but VBA is probably the only way to get a true text box
to appear on mouse over. A simple script like:
Sub ShowPopOver()
ActivePresentation.SlideShowWindow.View.Slide. _
Shapes(5).Visible = True
End Sub
will show the 5th shape on the current slide. This script can be assigned
to the MouseOver Action Settings for another shape. However, more code
will be needed to make the shape go away. It's not that hard--if you know
VBA, and that's a big IF.
--David
--
David M. Marcovitz
Director of Graduate Programs in Educational Technology
Loyola College in Maryland
Author of _Powerful PowerPoint for Educators_
http://www.loyola.edu/education/PowerfulPowerPoint/