101. Lock a folder without any software

To lock a folder with out any software just follow the steps

1. Copy and paste the following code (in green color) in to Notepad.

2. Type your password in place of "Type your password here"

3. Save the file with *.bat extension instead of *.txt

4. Now double click to open the file.

5. When you open it, a new folder named Locker will be created in the same place.

6. Move all the folders and files you want to lock into this folder.

7. Now double click the batch file again and in the confirmation type 'y' to lock the folder, and the locker folder will disappear.

Whenever you want to unlock the folder, open the batch file and enter the password, the locker folder will reappear again.

/***********Start Copying 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.
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%==type 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
goto end
:MDLOCKER
md Locker
echo Locker created successfully
goto End
:End

/****************Stop Copying here*************/

93.Create invisible titles for desktop icons

In this first step, you will need to make sure that Windows XP is configured to use drop-shadow icon titles. Here's how:

1. Right-click My Computer and choose Properties.
2. Click the Advanced tab in the resulting window.
3. Click the Settings button inside the Performance pane
4. Click the Visual Effects tab.
5. Scroll down until you see the entry "Use drop shadows for icon labels on the desktop". If it's not checked, go ahead and check it now.
6. Click OK.

Now Windows will not include a rectangular background around the icon text.

In this next step, we will create our invisible title. Since Windows will not accept a space as a file name, we will need to use a character that is invisible. The ANSI character "0160" is a non-breaking space and is visually indistinguishable from a space. We will need to insert this ANSI character into the icon title box, here's how:

1. Right click an icon and select Rename (or single click the icon and press F2)
2. Hold down the Alt key and type 0160 on your numeric keypad, then release the Alt key.
3. Press Enter.

Note: You will now see a highlighted rectangle that represents the invisible title but a single click on a blank area of your desktop will make this disappear.

To make a second icon have an invisible title, just insert the special ANSI character twice into the icon title box. (eg: ALT + 01600160) This is necessary because Windows will not allow duplicate file names.

89.Lock a folder without any software

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 when u double click key the control panel will change to normal folder..
Try this out .....