+* Microsoft DirectX SDK:
+
+ * for D3D10 support the [latest](http://msdn.microsoft.com/en-us/directx/default.aspx) is
+ recommended.
+
+ * for DDRAW, D3D7, D3D8 support the [August 2007 release](http://www.microsoft.com/downloads/details.aspx?familyid=529F03BE-1339-48C4-BD5A-8506E5ACF571)
+ or earlier is required, as later releases do not include the necessary
+ headers.