Hi, Yvette,
Create a header for the brochure, and place the logo in the header, aligning
it where you like. If your header settings are the same for all pages /
sections of the documents, the logo will appear on all pages.
See here for more information about the technique:
How to create a watermark in Word 97 and in Word 2000:
http://support.microsoft.com/kb/q211324/
The steps may vary slightly in different versions of Word, but this gives
you the basics.
Hope that helps--