Secure your Folder in XP, Window 7

How to Secure Folder in XP, Windows7 without using third party Software.
 For Hide Folder

Open Run Dialog Box

Type attrib +h +r +s (drive name) e:/Folder Name

For UN Hide Folder

attrib -h -r -s (drivename) e:/Foldername

How to Lock Your Folder

Open Command Prompt & Type

Cacls (Folder Name) /e /p everyone:n

For Unlock

Cacls (Folder Name) /e /p everyone:f