[Zope] Emergency user and acl-users

Can anyone point me to how to replace the acl_users in a Zope root? The emergency user doesn't appear to be allowed to add it and I can't find any documentation. I want to replace the default with something with a bit more flexibility, like SimpleUserFolder or GRUF. Thanks -- Mark Barratt Text Matters Information design: we help explain things using language | design | systems | process improvement ______________________________________________________ phone +44 (0)118 986 8313 email markb@textmatters.com web http://www.textmatters.com