Directx 10 – Download for windows XP, Vista
Directx 10 Download – Directx 10 shipped with windows vista and was only available with vista or later. It was a major update to Directx apis like Direct3D, DirectDraw, DirectMusic, etc. DirectSound was deprecated and DirectPlay DPLAY.DLL was removed and replaced with dplayx.dll.
Windows xp users may not be able to download an official version of Directx 10.However, unofficial port of Directx 10 for windows xp is available here.
DirectX 10 Alky preview for windows xp lets you enjoy Directx 10 games on windows xp.It is also said to improve hardware compatibility on windows vista!