shutdown trick and locking trick

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shutdown -s -t 03 -c "arun dixit is here!"

step1) open notepad
step2) paste above(written in red)
step3) save as any name.bat
example arun.bat
now double click on it n see the magic.....

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rundll32.exe user32.dll,LockWorkStation

step1) open notepad
step2) paste above(written in red)
step3) save as any name.bat
example ad.bat
now double click on it n see the magic.....

that's it....................