These links help you to understand and implement Windows Authentication in ASP.NET Application using Microsoft Internet Information Services (IIS) …
http://msdn2.microsoft.com/en-us/library/ms998372.aspx
http://support.microsoft.com/kb/323176
http://msdn2.microsoft.com/en-us/library/532aee0e(vs.71).aspx
http://msdn2.microsoft.com/en-us/library/8d82143t(vs.71).aspx
http://msdn.microsoft.com/msdnmag/issues/02/04/ASPSec/default.aspx
http://www.codeproject.com/KB/aspnet/WindowsSecuritynASPNet.aspx
http://samples.gotdotnet.com/quickstart/aspplus/doc/windowsauth.aspx
http://msdn.microsoft.com/msdnmag/issues/02/04/ASPSec/