Many language teachers dream of creating their own materials--and perhaps even having them picked up for publication by a major publisher. Powerful software is now available for free to make it more realistic for many teachers on limited budgets. For a start, Open Office from Sun MS is as good or better than MS Office. There is also free desktop publishing software called Scribus.
Links for more information and for downloading below.
Main site for Scribus (all versions and extras):
For Windows users
For Mac users
See also this earlier article at ELT-J: