I'm not sure what you are trying to accomplish here, but I do have
some general remarks about Word and page breaks:
No, you cannot prevent Word from inserting page breaks; it does so
depending on margins, paper size, font size, line spacing, etc. As you
add text to a page, it "grows" and sooner or later it will be "full"!
As any word processing program, Word is designed to have text flow
from page to page; it doesn't offer complete control over text
positioning like a page layout program does.
However, Word does offer a degree of control over the text flow. For
example, you can specify that a paragraph shouldn't be split across
pages by using "Keep lines together". You can force a paragraph to
always be on the same page (or in the same column) as its following
paragraph by using "Keep with next" (both of these options are found
on the Line and Page Breaks tab of the Paragraph dialog box).
Also, you can specify that Word should include a page break before a
specific paragraph (or by all paragraphs using a specific style), by
using the "Page break before" option on the Line and Page Breaks tab
of the Paragraph dialog box.
You can use section breaks to specify that the following text should
start on a new page or on the following odd (or even) page.
If you want to limit the amount of vertical space a piece of text
should be allowed to occupy on the page, you can put it in a table
cell whose height is fixed. Although this won't prevent users from
entering more text than you want in that location, the "extra" text
won't be visible on screen; and it also won't print.
The following articles provide additional information:
Why does the appearance (or layout) of my document change when I open
it on a different machine?
http://word.mvps.org/FAQs/Formatting/TextReflow.htm
Tips and tricks for copy fitting
http://word.mvps.org/FAQs/Formatting/FitCopy.htm