Microsoft does offer a free PowerPoint MSAgent scripting program called
Presentation Narrator, just as Glenna says. I didn't recommend it, though,
because it's not nearly as easy to use as Vox Proxy or MASH, both of which
come in free 30-day trial versions.
Presentation Narrator is a PowerPoint macro, and requires users to manually
write code for MSAgent animations. The code is quite simple. But every word
of every command (as well as every word of dialog) must by typed by the
user; and a small typo in an action command will prevent the script from
running properly. Vox Proxy and MASH, on the other hand, automatically write
action command code in response to mouse clicks; users have to type only the
MSAgent characters' dialog.
VoxProxy is the Cadillac of MSAgent scripting programs for PowerPoint, and
in my opinion, is well worth the $199.00 a license costs (after the free
trial period has expired).
A MASH license is only $24.95 (after the free trial period has expired), and
so -- for users who place any value at all on their own time -- is the
equivalent of "free," once the value of the time a user would save (as
compared to the time required to use Presentation Narrator) is factored in.
If completely "free" is a deciding consideration for users, I would
recommend a third MSAgent scripting program called Karen's Power Toy,
available free at
http://www.karenware.com/powertools/pttoy.asp . The
scripts created by Karen's Power Toy have to be activated from within
PowerPoint, while a presentation is being made. The way to do that is to
hyperlink the Power Toy script to a shape or Action Button, so the script
runs in response to the presenter clicking or mousing over the linked-from
shape or Action Button.
(Details on how to use all three of these programs -- Vox Proxy, MASH and
Karen's Power Toy -- will be forthcoming in a book I'm now writing,
tentatively titled "Toon It Yourself: Microsoft Agent Digital Talking
Characters, for Presentations, Websites, and More.")
-Lon