Some ideas for you:
http://www.pptalchemy.co.uk/powerpoint_hints_and_tips_tutorials.html#timers
http://pptfaq.com/FAQ00081.htm

Signature
Amazing PPT Hints, Tips and Tutorials
http://www.PPTAlchemy.co.uk
http://www.technologytrish.co.uk
email john AT technologytrish.co.uk
> Does anyone know how to insert a working stopwatch into Power Point 2003?
>
> I am putting together a presentation that includes two times for voting --
> each about 15 minutes long.
>
> Thanks.