[Zope] User properties in DB with LoginManager?

Is there a straightforward way of implementing this? I'd like to be able to set/get properties for a user in the database (PostgreSQL), much as exUserFolder does. I'm a bit overwhelmed by the numerous components to the LoginManager (or ZPatterns, I suppose), and I get the feeling that there is something in there that does this, but I'm at a loss as to where to begin. Thanks for any help you may have, -scott