Description Field in WinXP Services

[rbt]

How does one associate a "Description" with a Windows service written in 
Python? I've just started experimenting with Python services. Here's my 
code... copied straight from Mr. Hammond's "Python Programming on Win32":

  import win32serviceutil
  import win32service
  import win32event

  class test_py_service(win32serviceutil.ServiceFramework):
      _svc_name_ = "test_py_service"
      ## Tried the following to no avail.
      _svc_description_ = "Test written by Brad"
      _svc_display_name_ = "Test Python Service"

      def __init__(self, args):
          win32serviceutil.ServiceFramework.__init__(self, args)
          self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)

      def SvcStop(self):
          self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
          win32event.SetEvent(self.hWaitStop)

      def SvcDoRun(self):
          win32event.WaitForSingleObject(self.hWaitStop, 
win32event.INFINITE)


  if __name__ == '__main__':
      win32serviceutil.HandleCommandLine(test_py_service)