WiFi Shield with RN-171: turn on and off a LED using my web browser

Hi friends, this is my first time here, I would appreciate very much if you could help me with this: I have this WiFi Shield: http://www.seeedstudio.com/wiki/Wifi_Shield And the Arduino Uno board I want to turn on and off a LED and read the state of a pushbutton using my web browser. Have you done this before? Do you have some example? Thanks in advance.

Excuse me please, I have been looking for information and I could see that my Wifi Shield is this: http://www.seeedstudio.com/wiki/Wifi_Shield_V1.1 In fact, I have been able to run the code "Demo: Wifly_Test" and it works! but I don't know how to achieve my goal. Any help will be greatly appreciated.