I receive Excel files via e-mail from my head office that can't be opened
with Office xp. As close as I can tell, these files are called "Compound
Excel Files". I can't find any explanation of what a Compound File is and
why I wouldn't be able to open it. In addition, when I notified the office,
they cut out the pertinent information segment of the file and re-sent it.
Surprisingly, I was able to open it. They claim they didn't change the
format or program.