Windows users can download and install DirectX 9.0c for free directly from Microsoft. The program is a freely distributed utility, so users can also find it at free file-hosting sites such as File Hippo and Software Patch.
To get DirectX 9.0c directly from Microsoft.com, type "DirectX" into the search box in the upper right-hand corner of the Microsoft landing page, and select the DirectX 9.0c end-user runtime executable file. Once the download completes, double-click the file to install it to your system.
Many free file-hosting sites also host this program, because Microsoft licenses it as a free utility for any Windows user. From popular hosting sites such as File Hippo or Software Patch, search for "DirectX 9.0c," and then download and install the file.