See http://www.adobe.com/support/techdocs/317147.html "Troubleshoot
problems with Acrobat PDFMaker (6.x and 7.0 on Windows)".

Scooter wrote:

Whenever I open Word 2003, I get "The Creat Adobe PDF monitor cannot be
found" message with instructions to reinstall "Create Adobe PDF". When I
close the message, I get a "Run time error 53" message. I have searched
previous comments about this problem but none solves my problem or they do
not give me enough information to correct the problem. Ideas?