Windows Authetication

[Luis Carvalho]

Hi!!
I'm developping a web app that uses the windows
authetication to manage it's permissions. In other words,
I want only the users that can get in my win2000 machine
to be able to access the app.

I'm using System.DirectoryServices to do this for it is
what I've read.

I create a new DirectoryEntry but can't ever do a bind or
get the users in it or whatever...

I don't know what to do?

If I named my machine luis-carvalho my Directory entry
will be something like :

System.DirectoryServices.DirectoryEntry
("WinNT://luiscarvalho) will it?

Can anyone point me in the rigth direction?

Thank you in advance