LOCK A FOLDER

First select a folder for example i'll use a folder name movies in D drive D:\movies\

in the same drive u create a text file and type

ren movies movies.{21EC2020-3AEA-1069-A2DD-08002B30309D}

and save it as loc.bat

again u type in a notepad as

ren movies.{21EC2020-3AEA-1069-A2DD-08002B30309D} movies

and save it as key.bat

now in D drive u can see two batch files loc and key.. when u double click loc the movie folder will change to control 

panel and whn u double click key the control panel will change to normal folder..

Try this out .....