Tim,
Anybody should be able to post now. However, they will be anonymous if they have not signed in. If you have a liost of people you wish to have access to post as themselves, I can add them for you. I am looking into how or whether Commuity Server can allow for "Group Admins" so that someone like yourself can assign new users and do "admin type stuff" to your forums, blogs, file and photogalleries, etc
Short of that, I can add the names and users and put them in the Umita Users role.
Dale Lature
UmCom