I am sure this info is already available @ Help2Go....but just in case a member missed it....see the download links below...they allow you to view powerpoint downloads for free

If you are using Windows and do not have Power Point installed to view Microsoft PowerPoint You can download a FREE viewer from Microsoft from this link
Download details: PowerPoint Viewer

If you are using an Apple Macintosh and do not have Power Point installed to view Microsoft PowerPoint You can download a FREE viewer from Microsoft from this link
Download details: PowerPoint 98 Viewer for Macintosh