Problem using PostgreSQL driver

Hi, i'm here again...=D
well, in my portlet (that works XD) i'm trying to use the postgresql
driver to connect with my database (the Jahia use the postgresql too)
my code is this:

Out = response.getWriter();
try{
    Driver.forname("org.postgresql.Driver");
}catch(ClassNotFoundException e){
    Out.println("<font color=\"#c51313\">Could not load the
apropriated driver</font><br/>");
}

but when i run it, the result always shows me "Could not load the
apropriated driver"...why???

Thanks ;]
-- 
SDM - Garimpar.com
Seja esperto, seja livre, seja Linux