Problems using JDBC Driver. - Mailing list pgsql-general

Hi, i'm starting to use PostgreSQL. I'm using 6.5.4 version, and i'm
having problems using JDBC driver. I'm sure that i'm doing something
wrong but i don't know how. I'm trying to connect to a database in this
way:

                String url = "jdbc:postgresql:BDPrueba";

                Connection con = DriverManager.getConnection(url,"","");

where BDPrueba is the database which i want to connect. The driver is
installed sucessfully, because the Class.forName(postgresql.Driver)
sentence doesn't reach ClassNotFoundException. What can I do?.

Thanks a lot.
Javi.

PD: Sorry if i haven't written this very well, but my english isn't very
good.