Powerpoint is presentation software developed by Microsoft and cost money to use. You can get a 60 day free trial here:
http://us20.trymicrosoftoffice.com/product...p;culture=en-USIf you're looking to purchase Powerpoint, I'd suggest you get it packaged with Word and Excel which are both helpful programs although I'm sure you could purchase it separately if you want.
Powerpoint viewer is a program that allows you to view Powerpoint presentations but not create or edit them.
If you'd like a free and well recommended solution, you should consider
OpenOffice.Org. It allows you to work with Microsoft Office files so that's really neat, and it's completely free too. It will take a bit of getting used to though if you typically use Microsoft Office.
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