Unless you have a powerful PC / graphics card it may be a jerky motion
You should be able to resolve this by turning on the "Enable Hardware
Graphics Acceleration" in Slide Show > Set Up Show. This feature requires
that your video card that supports Microsoft Direct 3D though.
Unless you have designed the photo to be a 360 panorama the "join" may be
unconvincing
You will need to trial and error. Probably testing out with the motion path
to get an accurate result. Uploaded sample here:
http://pptheaven.mvps.org/blog/ScrollingPictures.zip
--
Shawn Toh (tohlz)
Microsoft Most Valuable Professional (MVP PowerPoint)
Site Updated: July 23, 2006
3 New PowerPoint Games
http://pptheaven.mvps.org
PowerPoint Heaven - The Power to Animate