[Zope] Postgresql Adaptors

I'm migrating some code that uses ZMySQLDA to ZPoPY, and just figured out that ZPoPY does not convert datetime fields to time objects when I select them. Is there any pgsql adaptor for zope that does this convertion? (zmysqlda does it) I thought all database adaptors had some kind of standards, like data type conversion, but it doesn't look like this is the case. thanks Alex