DOROTHY CHORAZAK,
This problem can occur when both of the following conditions are true:
The Microsoft Office Startup folder or the Microsoft Excel Startup folder contains either (or both) of the following Adobe Acrobat PDFMaker add-in template files:
Pdfmaker.dot
Pdfmaker.xla
... and Norton AntiVirus software is installed.
It could be some other add-in as well -- the error is a WordBasic error. The resolution is either to get the latest version of the add-in or move its .dot files to another folder.
See the knowledge base article for a step by step fix.
You receive a "Compile error in hidden module" error message when you start Word or Excel
http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B307410