Webserver Led Status

Hi, I have the Ethernet Shield from Nuelectronics, i have the webserver demo running nicely, can someone give me a pointer of how i display the status of the Led on pin 13 on the webserver page please?

Or how i can turn the LED on or off via the webserver?

Thanks!!!

There is more information about working with that ethernet shield on this thread: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1275614308