1. If you're talking about vertical alignment, change it on the Layout tab
of Page Setup in a new blank document (without changing anything else), then
click the Default... button and answer yes.
Although you *can* do it by the steps described in http://word.mvps.org/FAQs/Customization/CustomizeNormalTemplate.htm,
it's a really bad idea. It would mean that all sorts of documents --
including labels, mail merges, and what-have-you -- would also default
to justified text.