install the February 2010 release of DirectX 9
get the June 2010 (final) release of DirectX 9. This won't install but you can extract the files and manually add ones that are missing.
add D3DX9_43.DLL, D3DX10_43.DLL, D3DX11_43.DLL, D3DCompiler_43.dll, d3dcsx_43.dll, XAPOFX1_5.dll
xinput DLLs (can't remember where these are found, but they can be added to a game's own directory)
add the following files and execute the commands to register them (whatever that means)
regsvr32 xactengine2_0.dll
regsvr32 xactengine2_1.dll
regsvr32 xactengine2_10.dll
regsvr32 xactengine2_2.dll
regsvr32 xactengine2_3.dll
regsvr32 xactengine2_4.dll
regsvr32 xactengine2_5.dll
regsvr32 xactengine2_6.dll
regsvr32 xactengine2_7.dll
regsvr32 xactengine2_8.dll
regsvr32 xactengine2_9.dll
regsvr32 xactengine3_0.dll
regsvr32 xactengine3_1.dll
regsvr32 xactengine3_2.dll
regsvr32 xactengine3_7.dll
regsvr32 XAudio2_0.dll
regsvr32 XAudio2_1.dll
regsvr32 XAudio2_2.dll
regsvr32 XAudio2_3.dll
regsvr32 XAudio2_4.dll
regsvr32 XAudio2_5.dll
regsvr32 XAudio2_6.dll
regsvr32 XAudio2_7.dll

DirectX9c