Get User who was logged in Windows using ASP.NET 2.0

Hi all,
I want to retrieve the User email Address (or entire profile) of the user who was logged in to Windows Machine using an ASP.NET 2.0 Console Application.
My research says that we need to have atleast 3.5 to use System.Directoryservices.<any namespace>

But I need to do it in 2.0