http://www.openoffice.org/
Felix: If you're particularly fed up with Word, I recommend OpenOffice, a free office suite. Aside from being free, it's got the power of compatibility -allowing you to open and save in many formats. They're similar enough to eachother that you can pick it up with minimal hiccups.
If you're not feeling adventurous about something so mundane, give it a thought next time you're faced with plunking down the cash for a new office suite.