configuring iis for resolve nt password

hi all,
i have a iis on windows xp pro. this iis serves in
intranet. and all users have domain password in intranet.
i write some asp code for this. but this code does't give
me the nt user name of user who visit my site.

this code is only giving users who is recognized on local.
and access the page on local...

now what can do on iis's configuration.
thanks for your helps...

my code is below:

<%
Dim login,userName
Dim adres
userName = Trim("" & Request.ServerVariables("LOGON_USER"))
login = Request.ServerVariables("REMOTE_ADDR")
Response.Write "User Name: '" & userName & "'"
REsponse.End

%>

"xnor" <xnor82 RemoveThis @yahoo.com> wrote in message
news:0f1801c38297$2dda9c40$a001280a@phx.gbl...
 > hi all,
 > i have a iis on windows xp pro. this iis serves in
 > intranet. and all users have domain password in intranet.
 > i write some asp code for this. but this code does't give
 > me the nt user name of user who visit my site.
 >
 > this code is only giving users who is recognized on local.
 > and access the page on local...
 >
 > now what can do on iis's configuration.
 > thanks for your helps...
 >
 > my code is below:
 >
 > <%
 > Dim login,userName
 > Dim adres
 > userName = Trim("" & Request.ServerVariables("LOGON_USER"))
 > login = Request.ServerVariables("REMOTE_ADDR")
 > Response.Write "User Name: '" & userName & "'"
 > REsponse.End
 >
 > %>

Make sure you have authentication setup correctly.
5.1 on XP is basically the same as 5.0 on W2K.

<a style='text-decoration: underline;' href="http://www.microsoft.com/windows2000/en/server/iis/" target="_blank">http://www.microsoft.com/windows2000/en/server/iis/</a>

Microsoft Internet Information Server
Administration
Server Administration
Security
Authentication
Access Control

HOW TO: Configure IIS 5.0 Web Site Authentication in Windows 2000
<a style='text-decoration: underline;' href="http://support.microsoft.com/?id=310344" target="_blank">http://support.microsoft.com/?id=310344</a>
HOW TO: Configure User and Group Access on an Intranet in Windows 2000 or
Windows NT 4.0
<a style='text-decoration: underline;' href="http://support.microsoft.com/?id=325358" target="_blank">http://support.microsoft.com/?id=325358</a>

--
Tom Kaminski IIS MVP
<a style='text-decoration: underline;' href="http://www.iistoolshed.com/" target="_blank">http://www.iistoolshed.com/</a> - tools, scripts, and utilities for running IIS
<a style='text-decoration: underline;' href="http://mvp.support.microsoft.com/" target="_blank">http://mvp.support.microsoft.com/</a>
<a style='text-decoration: underline;' href="http://www.microsoft.com/windowsserver2003/community/centers/iis/" target="_blank">http://www.microsoft.com/windowsserver2003/community/centers/iis/</a><!-- ~MESSAGE_AFTER~ -->