Scroll Lock and Num Lock LEDs as Network Activity Indicators
Free tool called Network Lights that allows you to convert your keyboard Scroll Lock and Num Lock LEDs as Network activity indicators.
This utility is pretty small and works out of the box, there is no installation required. When you run this utility it sits in your system tray and immediately you will be able to see that the keyboards Scroll Lock and Num Lock LED’s are now acting as network activity indicators.
The the blink rate of the keyboard LEDs can be controlled from the options that is provided in the program. The default blink rates is 100ms, if you intend to increase or decrease this then you can change it from the options that is provided.
Also you can view your network statistics using this program.
This utility works in Windows XP and Windows Vista. This is pretty useful program that I needed and has found a place for itself in my software collections. 
