建立系统隐藏用户，XP有效，其他系统未测试，建立的隐藏用户只有计算机管理能够看到，其他比如net命令或登录界面均不可见-Hide the user to establish the system, XP and effective, other systems did not test to create a hidden user only the computer management to see that other such as net orders or login screen