LAN Watcher

I recently installed a win2k machine to run Winroute for CM access for my machines. Is there a program that I could get that would graphically display the status of the network at any given time. I would like to be able to keep one eye on the packet traffic of the LAN, and which pc's are accessing the net, and the rate at which they are communicating.
I know it sounds sad, but I have a monitor sitting displaying a blank desktop, doing nothing but providing a gateway for the LAN; it would be useful to put it to some use.

Saber
<IMG SRC="smilies/cool.gif" border="0">