how to create a namespace in vb 2008 .net3.5

[Nasheet]

i want to create a namespace but after compiling it shows the following error

Error 1 Program 'D:\Visual Studio 2008\Projects\namespace1\namespace1\obj\Debug\name space1.exe' does not contain a static 'Main' method suitable for an entry point namespace1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace mynamespace
{
    public class program
    {
        public static void display()
        {
            Console.WriteLine("From mynamespace.test-----hello world");
        }
    }
}