Version 2003 makes multiple copies of each image in different formats and/or
resolutions. This is by design and part of the VML support built into 2003.
All the copies of an image are not downloaded to the visitor, only one of
the copies will be. Which one is determined by the users browser. The code
in the web page determines what kind of browser is in use and then based on
that the browser gets the best quality image supported by that browser. An
older browser will get a lower quality image while a newer one will get the
best quality image.
If you deleted or in any way modified the image files created by 2003 then
you'd have some site visitors that will view pages with no images.

Signature
David Bartosik - MS MVP
for Publisher help:
www.davidbartosik.com
enter to win Pub 2003:
www.davidbartosik.com/giveaway.aspx
> When I look into the files of my 40 meg website designed with Pub 2003 I
> notice every picture I have is saved twice. Two copies of each picture
> graphic although I only need the one. What gives ... can I delete the extra
> picture to make the file size smaller?