If you don’t know about OpenOffice already, you should do yourself a favor and check it out. It’s a suite of office productivity tools (based on Sun Microsystems’ StarOffice) that rivals what Bill Gates’ flying monkeys are churning out.
Oh, except it’s free.
It runs on Solaris, Windows, and Linux. Now, if it runs on Linux, does that mean it runs on Apple’s OS X? One nifty feature of the latest version of their word processor is that you can export as PDF. The whole enchilada is downloadable from the web, but it’s a 50-megabyte download so you might want to make a sandwich or something while you wait.