How do you add a jar to the classpath?

Question

I'm trying to load a driver for MySQL, but the program doesn't seem to find the driver. I get an exception everytime. I keep seeing references about adding the jar (mysql-connector-java-5.1.6-bin.jar) to the classpath, but I don't know how to do that. Also, do I only that the jar, because there are other files along with it (src, com, etc.). I'm running Windows XP and using Eclipse.
import java.sql.*;
public class Driver {
     public static void main (String[] args) {
          try {
               // Step 1: Load the MySQL driver.
               System.out.println("BP01");
               Class.forName("com.mysql.jdbc.Driver");
               System.out.println("BP02");
          } catch (Exception e) {
               System.err.println("Got an exception! ");
               System.err.println(e.getMessage());
}

Answer 1

In Windows Explorer or the Command Prompt, try changing your directory to what the message about not finding the JAR in the repository says (C:\Documents and Settings\xxx\Desktop\mysql-connector-java-5.1.6\) and verify that something called mysql-connector-java-5.1.6-bin.jar! exists there.