[Zope] Problems with LoginManager

I need to implement user authentication (with Zope 2.3.1) based on a PostgreSQL user database and found a HOWTO at zope.org: <URL: http://www.zope.org/Members/jok/SQL_based_LoginManager> This pointed me to a howto for installing LoginManager and ZPatterns: <URL: http://www.zope.org/Members/BwanaZulia/zpatterns_install> After compleating the LoginManager/ZPattern installation I restarted the Zope server, but LoginManager doesn't appear in the list of available objects/folders in the managment user interface. I really need some help to get it working since I haven't found any good information about how to get LoginManager working (except for the two links above). -- Lars Preben