Here is a trick to us e the lights of your keyboard in a more creative manner in Windows.
This trick uses a simple Visual Basic Script which when
activated makes your Scroll lock, Caps lock and Num lock
LEDs flash in a cool rhythmic way which gives the
perception of a live disco on your keyboard.
Keyboard tricks
To make your own live disco, follow the steps given
below:-
Step 1 :- Open Notepad.
Step 2 :- Copy paste the exact code given below:-
Set wshShell =wscript.CreateObject("WScript.Shell")
do
wscript.sleep 100
wshshell.sendkeys "{CAPSLOCK}"
wshshell.sendkeys "{NUMLOCK}"
wshshell.sendkeys "{SCROLLLOCK}"
loop

Step 3 :- Save the file as Disco.vbs or "*.vbs" with any name.
Double click on the Saved file to see the LED lights on
your keyboard go crazy and make your own cool disco.
This trick has been tested on Windows XP, Windows Vista,
Windows 7 and Windows 8 and found to be working
perfectly.
Note :- You can disable the keyboard disco by starting Task
Manager and ending the wscript.exe process.
HAVE FUN..