[Zope] Disabling registration form

I know I can unshow the 'join' link through the portal_registration tool, but the login form still provides a link to the registration form. How can I disable registration alltogether? -- Martin F. Krafft Artificial Intelligence Laboratory Ph.D. Student Department of Information Technology Email: krafft@ifi.unizh.ch University of Zurich Tel: +41.(0)1.63-54323 Winterthurerstrasse 190 http://www.ifi.unizh.ch/~krafft/ CH-8057 Zurich, Switzerland NOTE: The pgp.net keyservers and their mirrors are broken! Get my key here: http://people.debian.org/~madduck/gpg/330c4a75.asc