The OP mentions a problem with compatibility when "uploading documents."
Open Office can read and write MS formats. When you save a document you need to change the file type on the save dialog box. So you go file save, and then you change the type to MS Word, instead of the default open office format.
But -- in my experience, with Open Office you can read the content, but the formatting won't match. Not a big deal if you just want to know what the memo says, but if you're trying to collaborate on a document and you're sending edits back and forth it's not so good.