C#2005 Раннее связывание

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace WindowsApplication1
{
class Program
{
Excel.Application app;
Excel.Workbook myBook;
Excel.Worksheet mySheet;

/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);

{
Excel.Application app = new Excel.Application();

app.Visible = true;

}
}
}
}

Как можно добавить книгу и листы?:eek: