The Postgres database that I use does not allow a table named "user". You may want to check if it allows "users" as a table name (or try a different table name).

Did you happen to receive an error message? That would help.

As for the username/password for the database, it is not necessarly the same for the database and your user account. The administrator may have created the same username, but I would be suprised if the passwords were the same.

Postgresql documentation is available at http://www.postgresql.org/users-lounge/docs/7.0/user/.