The slide show can be saved on disk and shown on another computer if 

• the other computer has the same or higher version of PowerPoint; 
• the presentation has been publsihed to Package for CD (Office button , Publish)

 

• 

 or 

• the presentation has been Saved as a Web Page and the other computer has a recent version of Internet Explorer or Netscape. (This feature is found in the latest version of PowerPoint 2007) .

On your computer, full details can be found in the Help files .