I read a couple of other posts about a new install but they seemed kind of outdated. I'm confused as to which server I should install it on. We have Exchange 2003 running on Windows 2003 Server with a multitude of other servers running 2003 and 2000 that it could be installed on. From what I've read it seems ok (not necessarily better) to install it directly on the Exchange server as we won't have more than 8 or so users. Also, what are the requirements with SQL/MSDE?