global.asax

This is a book about vb.you could learn this from this book

<Script language="VB" runat="server">

  Public Sub Application_OnEndRequest(sender As Object, e As EventArgs)
    Response.Write("<hr size=1>")
    Response.Write("<font face=arial size=2>This page was served by ASP.NET</font>")
  End Sub

</Script>