You can give password any folder easy way by lockdir software. For that download the software from mediafire. Click here download the 500KB File. Which the folder you want to lock open the folder and past here that software. Next open the lockdir softtware. Give secrete Password and click on Encrypt. Will be change the icon of folder. When you want unlock the folder enter into the folder and click lockdir, click run button and enter secrete password, customize, click decrypt(D)& Click Minimize to try (M).
When you close the window you can’t open the folder without password.