You wouldn't be trying to double-click a PPS file by chance would you? If
so, open PowerPoint first, then click "File", "Open", and browse to the
folder where it resides and select it. If you received it by e-mail you
will need to save the attachment first.
If this isn't it, holler back with more info.
--
Bill Foley, Microsoft MVP (PowerPoint)
Microsoft Office Specialist Master Instructor
www.pttinc.com
Check out PPT FAQs at:
http://www.rdpslides.com/pptfaq/
"Success, something you measure when you are through succeeding."