Monitoring cluster ESX 4.0

Monitoring cluster ESX 4.0

Hello, we have a ESX CLUSTER. When we try to discover one nodes of the cluster, throught the "Add New Host" button of the Virtual Devices Infraestructure view, the application reports an Error, and the device is not discover.
 
Does opmanager supports ESXs cluster? How we can monitor these types of devices?
 
Thanks

                  New to ADSelfService Plus?