This guy converted his office from Microsoft products to almost fully Open Source products. Check out the article. He ends up using Sun's StarOffice instead of the free (and Open Source) OpenOffice.org, I'm sure because he wanted the support option that comes with StarOffice. Other than that he switched from Microsoft Windows to Mandrake Linux 9.1 and got everything that he needed for his office done all while saving thousands of dollars. Interesting read.