Exception Error - Please help I've tried everything!

Hello all,

I'm trying to get the following simple program to run just to confirm a
connection to the database:

//PostgresqlClient.java

import java.sql.*;

public class PostgresqlClient{
public static void main(String[] arguments)
throws ClassNotFoundException, SQLException{

String driver = "org.postgresql.Driver";
String url ="localhost";
String user = "root";
String pwd = "password";

Class.forName(driver);

Connection con = DriverManager.getConnection(url, user, pwd);
System.err.println("Connection complete");

con.close();
}
}

I keep getting the folowing errors:

Exception in thread "main" java.lang.ClassNotFoundException:
org.postgresql.Driver
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at PostgresqlClient.main(PostgresqlClient.java:12)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

I have tried adding the postgresql.jar file to my CLASSPATH, and have also
tried copying the postgresql.jar file to the same directory as the
PostgresqlClient.java and PostgresqlClient.class directories. I have also
tried running the following from the command line:

java -classpath postgresql.jar PostgresqlClient.class

I am using jdk1.5.0_09 and have tried using nearly all the available
postgresql.jar files available.

Any advice would be most appreciated.

Cheers,

Greg Peters....