Why?
The idea of running Microsoft Office on Linux seems a little silly to me. If you really want to run a specific application designed for Windows it probably makes most sense to run it on Windows. Why would you mess around with Linux in that case? How much money would it really save you per desktop? How much additional productivity risk would you be incurring? Would Microsoft give you any kind of support for this configuration (I doubt it)?
I like Linux and think that for technical users, it's great. But for a horde of unsophisticated users, it just doesn't seem to make sense. Before Linux gets on the desktop, needs to have an excellent end user experience and solid productivity applications. There is a long way to go on both fronts.