how we can secure our computer through Dos prompt command

[2anrip]

Hello frndz, today i want to ask something.......somebody tell me how we can secure our computer through Dos prompt command....????

[SidharthGore]

What exactly u mean by secure??? I am not getting you, If you want to lock your computer using command line then you just have to type "rundll32.exe user32.dll, LockWorkStation" without quotes in command prompt and hit enter.