[Zope] Using a Postgres database

[Kit O'Connell]

A user of my Zope site I'm developing for work needs access through Zope
to a postgres database. I poked around in the helpfiles a bit but haven't
been able to find anything that will tell me how to do this.

I gather I have to add a source so that when I 'Add a Z Gadfly Database
Connection' I can see it. I don't know where to start though.

Any help would be appreciated, even if it is as simple as pointing me to
the right documentation.

Cheers,
Kit