An amazing trick not only to lock your folders also to hide it...

Follow these few simple steps:
1. Copy the following program into notepad.
2. Change your password on the line
if NOT %pass%==type your password here goto FAIL
3. Save that file by extension .bat ( name is your choice)
4. Now on your screen there is a bat file appear.
5. Double click on that file.
6. You'll see the locker folder.
7. Save the files in that folder.
8. Double click on the BAT file & lock that folder
9. After lock that folder it will become hidden.
10.To open that folder double click on that bat file
11.Type you password & open that folder.

Copy following program in a notepad:-

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cls
@ECHO OFF
title Folder Locker
if EXIST "Control
Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" goto UNLOCK
if NOT EXIST Locker goto MDLOCKER

:CONFIRM
echo Are you sure u want to Lock the folder(Y/N)
set/p "cho=>"
if %cho%==Y goto LOCK
if %cho%==y goto LOCK
if %cho%==n goto END
if %cho%==N goto END
echo Invalid choice.
goto CONFIRM

:LOCK
ren Locker "Control
Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
attrib +h +s "Control
Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
echo Folder locked
goto End

:UNLOCK
echo Enter password to Unlock folder
set/p "pass=>"
if NOT %pass%==type your password here goto FAIL
attrib -h -s "Control
Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
ren "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
Locker
echo Folder Unlocked successfully
goto End

:FAIL
echo Invalid password
goto end
:MDLOCKER
md Locker
echo Locker created successfully
goto End
:End

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Enjoy and have fun with it!