In previous version of Exchange (2000 and 2003) and new property page appeared when editing a domain user. Now there is not property page, this is a huge pain in the butt. It was nice to be able to setup all of a user's settings in one place (there profile directory, their group memership, and their exchange options and email address). Now the only way to do this is through an annonying wizard in the exchange gui, or an even more annoying cryptic command-line interface). This is a step backwards... (of course it could just be bug that it did not get installed).

Jim answered this already here: http://forums.microsoft.com/TechNet/ShowPost.aspx?PostID=579029&SiteID=17.