[removing all headers and footers[_2_]]

I have been cutting down a MS Word 2003 file from a book sent to me by my
publisher.

But when I set page numbers, the lines have become separate pages.... I do
not know what is going on, but everything went fine until I put in page
numbers in the header form , and
now every line seems to have been made a page in some parts of this chapter.
Any ideas?