Lost file

Hi there,

I recently installed Microsoft PowerPoint Viewer (2007). I reinstalled it several times. Whenever I want to use it to view a pps, the system never finds it. When I search for it, it shows it as being there. When you look at the properties, it says it is located in the start menu. However, when I go there, it's nowhere to be seen.
What precise name would it have if I want to run it to view a pps? Also, where would the system install it? I have looked through program data, program files. Nothing...
It is frustrating.
Thanks in advance for your help.

Thanks for the reply. Maybe I didn't express myself clearly. What I want to achieve is to associate files with the program. That's where it doesn't find PowerpointViewer.