Retrieve user login name

On our intranet when a user first navigaes to my web application he is
prompted by the Browser to provide his user name and a password. Is there a
way of retrieving a user name on the server? If not, how else can I
personalize the user?

Thanks

"User Groups" <markgoldin_2000@yahoo.comwrote in message
news:e47QMPIAJHA.4064@TK2MSFTNGP02.phx.gbl...aTry Request.ServerVariables("LOGON_USER") or
Request.ServerVariables("AUTH_USER")

--
Anthony Jones - MVP ASP/ASP.NET

I am trying Request.ServerVariables("LOGON_USER")
and despite that I have an Anonymous Access removed
it is still an empty string.
"Anthony Jones" <Ant@yadayadayada.comwrote in message
news:Ot%23lIdJAJHA.4368@TK2MSFTNGP06.phx.gbl...

AUTH_USER worked, Thanks

"User Groups" <markgoldin_2000@yahoo.comwrote in message
news:ukfGDoJAJHA.4588@TK2MSFTNGP03.phx.gbl...