OK, I got Zope up and running with the assistance of the mailing list. Thanks guys. I have successfully added a Plone site, but when I tried to create a new user through the web interface I got the following message: You have been registered Site Error This site encountered an error trying to fulfill your request. The errors were: ErrorType ValueError ErrorValue Unable to find prefs_users_overview The URL is http://...ploneSite/join_form Do I need to something else before a Plone site is usable?