just bought a logitech newtouch keyboard and immidiately modded the keyboard leds to blue high power ones (old green leds havent even been one second in use.after doing the work i noticed that the leds weren´t very busy and i just wanted them to be
so i searched the net for something useful and found two good proggies.
one is named keyboard leds (HOW EXPRESSIONISTIC?!?)
and makes the leds just bilnk a little bit, which is quite fun, but not for long. the second one is a winamp plugin, which is really great for being run during gaming or internet surfin(GOT IT RUNING RIGHT NOW ;D)

stuff available here
members.aon.at/_k7/Visualization_Key_led.exe for the winamp plugin
members.aon.at/_k7/Keyboard Lights.zip for the lill proggie which is placed best in startup folder