My article on transitioning to OpenOffice.org from Microsoft Office
I really thought that I had posted this article, but I have not seen it in a quick page through.
It is a big, big article with most of what I recommend about setting up and switching, with the primary focus on individual users. But it applies to transitioning groups, as well.
See also this blog post, which has some really specific info about how to distribute clip art to many users on a network.
