Enabling and Disabling TaskManager

Couldn't the class RegEdit be replaced by one simple method?

private  void SetKey(bool enableTaskManager)
      {
          using (
              var mKey =
                  Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System"))
          {
              if (mKey != null)
              {
                  mKey.SetValue("DisableTaskMgr", enableTaskManager ? 0 : 1);
              }
          }
      }