Remote Monitoring "[Setup]" link is diabled. Can't set up Remote Monitoring.

I'm trying to set up remote monitoring in NIS2009 on my LAN, but the "[Setup]" link from the Network Security Map is disabled (greyed-out) on my desktop computers (Dell Vostro 420).  The setup link is enabled (blue) on my laptop.  I've searched the forums and the web, but can't find the answer.  Any help would be appreciated.

 

Thanks in advance.