OpenColorIO.dll missing( Blender Installation Problem)

Hi Guys,
I downloaded Blender 2.69.ZIP but it is not running on the computer. It says OpenColorIO.dll is missing from your computer.
so I went into website but that was bit confusing for me. I couldn’t figure out which file to download and how to install that for blender.
And I dont know what is missing from my computer.
my configuration is
AMD FX 8354 4.00 GHz processor,
Window 7, 32-Bit.
While on the other laptop with intel dual core 2.00 GHz, Windows vista 32-Bit, 4 GB RAM, its working pretty well.

PLZ help me, how to fix this.