DriverMonitor调试问题请教！

我按照书上的例子写好一个WDM程序，用DriverMonitor调试时给出下面信息：
Monitor     Unable to start the support driver.
   Monitor     Local messages will not be available.
   Monitor     Remote reader thread started
   Monitor     Using system32\\drivers\\regsample.sys for service RegSample
   Monitor     Using existing service database entry for driver.
   Monitor     The driver has already been started.
   Monitor     Unable to create service for driver: Error code: 6
   Monitor     ERROR (6): No driver is currently open.
   Monitor     ERROR (6): No driver is currently open.
   Monitor     ERROR (6): No driver is currently open.
   Monitor     Driver path set to E:\\WDM\\RegSample\\sys\\objchk\\i386\\RegSample.sys
   Monitor     Using existing service database entry for driver.
   Monitor     The driver has already been started.
   Monitor     The driver is already running.
   Monitor     ERROR (1052): The driver is not in a state to accept this
   Monitor     -- end --

我按“go”按钮时说“The driver has already been started.
  ”，且按“stop”时说“ERROR (1052): The driver is not in a state to accept this ”
不知是什么原因，还请高手指点！！

驱动没有装上

但是在这之前我已经安装驱动那呀！也告诉我成功安装了呀？
所以我一直搞不明白阿！！
CYoung，是不是还有别的原因呢？

在WIN2000下面不能通过drivermonitor来启动和停止驱动程序，最好是通过.inf文件来加载driver，可以通过drivermonitor来打印调试语句。

把光盘的注册表项到进来，不要安装，用drivermonitor打开就行

多谢各位指点！呵呵怎么给分阿！