NAV 2004 is still a good choice for first timers, but its minor improvements mean NAV 2003 users need not upgrade.
Microsoft Office Publisher 2003
Publisher 2002 is better integrated with Word and easier to use than ever--even easier than FrontPage. It's worth the hunt to find a copy of Publisher 2002.
Microsoft Student 2007 is a friendly, thorough homework resource for middle and high schoolers learning math, foreign languages, literature, and more, but you'll need to buy Office to fully use it, and you'll pay dearly for tech support.