Ensure that the slide thumbnail is selected and you are in the normal view
(not slide sorter view).
Then, click Design > Background Styles > Format Background.
Select Picture or texture fill.
Under Insert From, select "File".
Look for the picture you want, click ok.
Click Close to apply it onto current slide, or click "Apply to all" to apply
the background to the entire presentation.
--
Shawn Toh (tohlz)
Microsoft MVP PowerPoint
Site Updated: Oct 20, 2007
(Amazing PowerPoint animations, artworks, games here)
http://pptheaven.mvps.org
PowerPoint Heaven - The Power to Animate