I just upgraded fro Office 97 to 2003. When I run Word, I get a warning that
macros are disabled. Because of this, I cannot insert equations.

I found a page in Help titled "Macro language support is disabled". It says
to run the Setup program again and check Office Shared Features, Visual Basic
for Applications. It was already checked, but I unchecked it and checked it
again. I also tried lowering the security level. Nothing is working. I do
not appear to be having the same proble with Excel.