Authenticating Users in DOT NET

Hi,

I'm building an application that uses standard windows integerated security on our intranet.

What I would like to be able to do is authenticate users and if they are part of a window group display links to certain pages that only these users can see. Can anyone give any advice on this?

Thanks,

AuldNick

If you are using ASP, you could capturte user name by using

UserName = request.servervariables("LOGON_USER")

Yes, but how do I authenticate that particular user against a group, I know how to get the user ID, I want to be able to user windows security, therefore not storing user id's\passwords etc within my application.