Agent install uses same Windows Service Name

Hi Folks

I have installed the build agent three times onto the same server which holds TeamCity.  I still have only one WindowsService registered ("TeamCity Build Agent") despite providing unique information for each installation.  The "TeamCity Build Agent" service starts/stops the most recently installed agent.

Can anyone suggest how I might cause each agent to have a distinct Windows Service Name?

Is there a problem with the Windows instaler which needs to be resolved?

teamCity 8, windows 2008.

Thanks, Robin.