如何控制弹出一个NTLM验证窗口？

如何控制弹出一个NTLM验证窗口？

<%
Response.Status = "401 Unauthorized"
Response.Addheader "WWW-Authenticate","NTLM"
response.write "user=" & Request.ServerVariables("LOGON_USER") & "<br>"
response.write "用户登录"
response.end
%>