DirectX 9 - How to know exact version number?

[craige]

Well,

I just downloaded and updated my XP with latest DirectX 9.C, but still under DXDIAG it is showing the same version number as before - 4.09.0000.0904

Have the instalation not successful ? OR it shows this way by default ?

[Mr.Guvernment]

did you reboot after installation, possible you already had the latest ones.

[Satsumomo]

I've got that same number, so I'm pretty sure that's the most recent.