Microsoft has just released its second DirectX update of the year, covering DX 9, 10 and 11 for whatever version of Windows you may fancy. If perchance you're still not in the know, DirectX is a collection of application application programmable interfaces (APIs) which assist in your gaming, video watching, and anything else that falls under the computer multimedia category.
As such, it's highly recommended you download this update (link below) and get to installing -- simply extract the 103 MB file to a new directory and run the installer labeled DXSETUP.
Happy gaming, movie-watching and whatever else does it for you.
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