Create a Shortcut to Lock Your Computer!!

To create a shortcut on your desktop to lock your computer:
Right-click the desktop.Point to New, and then click Shortcut.

The Create Shortcut Wizard opens. In the text box, type the following:

• rundll32.exe user32.dll,LockWorkStation
• Click Next.
• Enter a name for the shortcut. You can call it "Lock Workstation" or choose any name you like.
• Click Finish.
• You can also change the shortcut's icon (my personal favorite is the padlock icon in shell32.dll).
• To change the icon:Right click the shortcut and then select Properties.
• Click the Shortcut tab, and then click the Change Icon button.In the Look for icons in this file text box, type:Shell32.dll.
• Click OK.
• Select one of the icons from the list and then click OK

You could also give it a shortcut keystroke such CTRL+ALT+L.
This would save you only one keystroke from the normal command, but it could be more convenient.

Note: If You still Find this as Difficult then Simply use the Key Stroke "Windows+L" to lock the computer.