In PPT 07, I export many slides to JPEG format. I have my export resolution
set (by changing in regedit) to 1200 x 900. This has been working.

Recently I downloaded and installed a fairly major looking 07 update.  Also
recently I hooked my Dell XPS 1530 to another device using an S video cable.  
Since one or the other of those events, my export slides have been clipped on
the right and bottom edges.  I get about 1000 pixels of slide and 200 pixels
of black left to right, and about  750 pixels of slide and 200 pixels of
black top to bottom.

This behavior continues when I switch to a different export format (PNG).  
It continues when I change the slide size in design pages.  It continues when
I change the export resolution in the registry, except that when I change it
to a slide size of about 640x480, I get the whole slide. This resolution is
way too low for my needs.

Anyone have a thought?

Thanks

Bob