Including .pdf graphics in slides

Hi, I'm using Mac OS X, and TeXShop (using TeX and Ghostscript) to
make slides using prosper.  I'm having a hard time figuring out how to
include graphics in .jpg or .pdf format (or any format at all).

When I write:

   \includegraphics{King.pdf}

I get the error message:

   ! LaTeX Error: Cannot determine size of graphic in King.pdf (no BoundingBox).

Based on various suggestions, I've tried executing various scripts in
the Terminal; and tried to insert a Bounding Box line into my pdf
files, but neither of these seem to work.

Any suggestions would be appreciated.

David


-- 
David Hsu
(e-mail) dhsu2 at u.washington.edu, dave.hsu.94 at aya.yale.edu
(blogs) complexcities.blogspot.com, worldchanging.com

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