>> I can use postgresql.jar or I must use jdbc6.2.1.jar?
>
> The names on the site are just to define what version they contain. You
> can rename the jar file into whatever you like, as long as the classpath
> points to it, and all the .class files are inside.
:-) I did a mistake
I don't understand if the postgresql.jar run with postgres 6.2.1.