HOW TO CREATE AN UNDELETABLE FOLDER

IT  WORKS ONLY IN [VISTA / WINDOWS 7 / XP ]
1.OPEN =CMD THEN ( Type in Run option, the command ‘cmd’ or navigate to All Programs->Accessories-> Command Prompt)

2.CHANGE THE DIRECTORY WHERE YPU WANT TO CREATE THE FOLDER type"cd.." TO EXTEND THE CURRENT DIRECTORY. AS AN EXAMPLE I WILL CREATE THE DIRECTORY IN  C:, so i will use the ‘cd..’ command twice to navigate to C: C:, so i will use the ‘cd..’ command twice to navigate to C: 
3.TYPE md\lpt1\\ and press enter, the folder now will be in your C:

4.NOW YOU WILL TRY TO DELETE IT IT WONT DELETE
5.TO DELETE IT GO TO 'CMD' NAVIGATE TO THE DIRECTORY AND TYPE rd\lpt1\\ and press Enter.