屏保程序，可以让你的计算机别人用不了。只有自己能用。。谢谢。。qq:28543487 开关在屏目最上方中间。点击就可打开。-screensaver program, you may make your computer others impossible. Only you can use. . Thank you. . Qq : 28543487 Switches in screen above the heads of most middle. It can be opened.