The following services should be running

* Remote Registry Service is enabled on the target server. (This is very important)
* RPC Service is enabled on the target server.
* Server Service is enabled on the target server.
* TCP NetBIOS Helper Service is enabled on the target server.
* Performance Counter DLL Host
* Performance Logs & Alerts
* Remote Procedure Call (RPC)
* Secondary Logon

Additionally, you have the following general requirements:

* File and Print Sharing is enabled on the Remote.
* NetBIOS over TCP-IP is enabled on the Remote.
* Ports 135, 137-139 and 445 are open between the SiteScope server and the Remote servers.
The UAC is disabled or managed in the registry