Try the following script to see all of your server variables in a neat table:
<html>
<body>
<table width="85%" border="1" cellspacing="0" cellpadding="2">
<% For Each VariableName In Request.ServerVariables %>
<tr valign="top">
<td><%=VariableName%></td>
<td><%=Request.ServerVariables(VariableName)%></td>
</tr>
<% Next %>
</table>
</body>
</html>

