[Zope] Replacing Root Acl_Users

I am sure this question has been asked before, but I can find any information on how to replace the root acl_users folder with something like CookieUserFolder. Can some one tell me how or point me to some docs? Thanks, Chris __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/