grabbing user info

[DrewDog_21]

I found this code snippet

<%@ Language=VBScript %>
<%

For Each Key in Request.ServerVariables 
	With Response 
		.Write Key & " - " & Request.ServerVariables(key) 
		.Write "<br><br>" '& vbCrLf 
	End With 
Next 


%>

that returns all of the Response key values. But I don't know which one to use to determine if the user has admin rights. Help!!