Thanks, Luk.  This sounds promising, but when I try to utilize it in a ppt
presentation using "tools", "add-in," it gives me the following message:
PowerPoint couldn't load the add-in Zoom."  Any ideas?

With all due respect  to the OfficeOne Zoom add-in, that's not it at all !!

What's needed and obvious, I think, is the simply ability, during a
PowerPoint presentation, to put the cursor arrow over any part of a graphic
or map and click (probably on the scroll wheel) and have the screen zoom in
on that area - then the scroll wheel would control zooming in or out, and
another click would return the view to normal.

I don't get it:

***I went to an Adobe presentation done with a MAC and this kind of zooming
was used with great effect thruout.  Hundreds present.

***I saw a West Point officer's presentation on a PC and he did it - but I
believe thru some complex motion paths / animation / effects.  Every search
I've done that  showed how to create even a klutzy zoom was bafflingly
complicated.

***I downloaded the PowerPoint 2007 beta thinking an easy zoom-in / zoom-out
solution would certainly be there.  Can't find it!

The MAC does it.  Photodex's CompupicPro does it in Windows.  The Army can
do it.

Doesn't that get anyone's juices at Microsoft flowing?