Load Balancer Manager web interface problem

Hi,

I am using Apache 2.2.3 in RedHat Linux. The server is strictly
compiled from the source.

I would like to enable the mod_proxy_balancer. It functions OK, but I
cannot get the Load Balancer Manager web page working. All I got from
/balancer-manager were the following lines:

==================================
Load Balancer Manager for nglinux01
Server Version: Apache/2.2.3 (Unix)
Server Built: Sep 19 2006 03:02:10
==================================

I expect I can disable/enable members from this page! Did I miss some
config. ? or it mod other than status, proxy and proxy_balancer?

Thanks