When I display Word 2003 (.doc) documents from MediaLab 2006, do I need to have a Word 2003 program installed on the computers? Can I use the "Word Viewer 2003" instead?

If that's not possible, how about OpenOffice (Writer)? Can it be used to show a Word file?

As our lab computers do not have Word program, it will be great if I can
use a free software to show the docs. Thanks for your help in advance!