Is there a easy way to have users sign up without have to be loged in as an admin in the control panel for Jive Messenger?
Jabber supports inband registration. Most jabber clients have an option to create a new account when logging in for the first time.
http://www.jabber.org/jeps/jep-0077.html contains the nitty gritty.
If you’'re looking for a web based registration you might want to look at the plugin in post url=http://www.jivesoftware.org/forums/thread.jspa?threadID=15620&tstart=105here[/url].
Hope that helps,