Issue installing drivers.

Also, I forgot to add, i went to the site:http://arduino.cc/en/Main/ArduinoBoardMegaADK?from=Main.ArduinoBoardADK
Down at the bottom, it says 'drivers and setups' i downloaded the arduino_ADK.zip but when i tried to install it i get "windows encountered a problem installing the driver software for your device".
I am using arduino IDE 1.0.5, my OS is Windows 7 32 bit