If memory serves you'll only see that service with Exchange 5.5 systems, not for 2k. I think it only gets used by the install/configuration stuff, it's left at manual and not started the rest of the time... although I'll need to clarify what it gets used for, exactly, with the DOH-boys. I do know it does not need to be started, however.
One of the fine folks in the DOH group indicated this morning this service is actually used for the Unity Bridge (for talking to OctelNet nodes). It's installed but dormant unless you're actually using the Bridge. In later versions of Unity this was renamed to be a bit more obvious... it's now called "CsBridgeConnector".
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.