You do not say much about the document other than what you are doing and it would be hard for someone to offer assistance not knowing much about the file. Of course, there is a difference between a "page" break and a "section" break. If you file does indeed contain sections, I would wonder where you are putting the section breaks (I would assume between each section but, you don't say).
Perhaps this link will help you:
http://word.mvps.org/faqs/formatting...thSections.htm
If not, maybe you can offer more information. Hope this helps...