Microsoft Word is an invaluable tool for use in the classroom. Teach your students how to use the spell check function—either by clicking on the button, or right clicking on the red line.
Have you seen the new SmartArt in Office 2007? It has neat pictures that would make great graphic organizers. Click on the Insert Tab and then SmartArt. They have graphics for processes, lists, cycles, hierarchies, relationships, matrices, and pyramids. You can even insert pictures on some!