[Zope] Users from a database

We are building a web site that will allow customers to log in and view their account data. Users (along with everything else) are kept in a RDBMS. Are there any (relatively simple) examples out there of ways to implement users or user folders? TIA, - rmgw http://www.electricfish.com/hawkfish/ ---------------------------------------------------------------------------- Richard Wesley Electric Fish, Inc. hawkfish@electricfish.com "Grownups have the most uninteresting explanations for things." - C. S. Lewis, _The Magician's Nephew_