Dr. Kassanke,
I came across your post and wondered if you might be able to help me.

The vendor of our application package provided us with another code
release. They told us that the DTDs did not change, but we found differences
in one file, so we believe there are more.

Do you know of any program that would allow us to compare two DTD files and
show the differences? I have Excel 2003, but being new to XML, I'm not sure
if its XML features would be of any help.

Thank you for any suggestions.