PostgreSQL works fine on NT. See
http://www.ontosys.com/reports/postgresql.html for some notes on how I set it up. That page refers to some other instructions that are very helpful.
I'm using PostgreSQL with Zope, via an ODBC driver. I don't know if that driver would work with AOLserver.
There is a current discussion on the postgresql.org lists about how well it works on Win98. It clearly does run at a basic level, but there are reports that regression tests fail when there are numerous concurrent connections to the database.
