UPDATE:

Sorry I haven't replied back to any of your comments guys. This is the
first time I've logged into this site in a long time. This instructable was something I made when I was in 8th grade. Yes I know my grammar is terrible and my spelling is even worse. This was just something I done for fun. It was never meant to be "secure or encrypted." Also this was only meant to work in Windows XP. I see that some of you have found ways to make it work in other OS and I think that's great. Most of your problems are probably related to using windows vista or windows 7. If you forgot your password just make another locker.bat and delete the old one. Just because you delete the locker.bat or locker.exe for those who converted it, doesn't mean you delete the folder where your files are stored. I will try to come back more often and respond to your comments and questions.

I'm going to show you how to make a simple folder locker by just useing note pad.

This is my first instructable so tell me what my mistakes were and how i can improve my next instructable.

Step 1: Open Up Notepad.

First you need to open up notepad. Go to start, run and type in notepad or go to start, all programs, accesories, notepad.

Step 2: Now Enter the Code

Now enter the code below into notepad, and put in your password that you want to use for the Folder Locker were it says YOUR PASSWORD HERE.

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.
pause
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%==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
pause
goto end
:MDLOCKER
md Locker
echo Locker created successfully
pause
goto End
:End

DONT FORGET TO PUT IN YOUR PASSWORD WERE IT SAYS YOUR PASSWORD HERE

Step 3: Save the Document

Now you need to save the document as File Locker.bat You must make sure that you have .bat at the end. This will save it as a batch file. Save it to the location were you want the Folder Locker to be.

Step 4: Now Just Open It.

Now just go to were you saved the Folder Locker and open it. It should make a folder called locker. To lock the Folder you need to open the batch file. It should ask you if you want to lock the folder, all you have to do is type Y for yes and N for no. and the folder should disapere. To unlock the folder just open the batch file again and enter your password.