I didn't find ZPsycopgDA but i have finded the package psycopg2.* who contain ZpsycopgDA, I buid it and install it, i don't know what doing else for installing ZpsycopgDA between my products? the file event.log don't give me any error? You should write these posts to zope-db mailing list not to zope-dev.
If you've installed psycopg2 and you put ZpsycopgDA into your Zope instance Products directory then, if everything is OK: 1. You should see ZpsycopgDA product at: ControlPanel->ProductManagement in ZMI (Zope Management Interface) and it's status shouldn't be broken. 2. You should see ZPsycopgDAConnection (or something like that) in the Add list in ZMI. Take a look at Zope book (eg. Zope book 2.7 edition on plope.org) at relational database connectivity. -- Maciej Wisniowski