Answers: you can download a free powerpoint watcher application from microsoft website
http://www.microsoft.com/downloads/detai...
another prospect is
http://www.openoffice.org/
"Open Office" is Free and will allow you to create/edit surrounded by rider to viewing.
I am concurring next to your second responder here
Open Office.Org is the choice of champion !!
It is a booger download -- totally free -- but some 107 MB !!
However it is flexible and have outrageous features -- one of them mortal -- a totally compatible PowerPoint sector !!