DirectX SDK - (December 2005)

http://download.microsoft.com/download/9/4/2/9428d199-bf6b-4bf4-8c45-89a439199278/dxsdk_dec2005.exe

http://www.microsoft.com/downloads/details.aspx?FamilyId=7D29004E-7A8D-4F0A-B199-6A740D8F27BB&displaylang=en

Overview
This DirectX SDK release contains updates to tools, utilities, samples, Documentation, and runtime debug files for x64 and x86 platforms. This release also include a public pre-release of Microsoft Cross-Platform Audio Creation tool, Managed Direct Code (2.0 CLR), and Direct3D 10.

It also continues to include the DirectX Runtime and Redistributable.

System Requirements
Supported Operating Systems: Windows 2000; Windows 2000 Advanced Server; Windows 2000 Professional Edition ; Windows 2000 Server; Windows 2000 Service Pack 2; Windows 2000 Service Pack 3; Windows 2000 Service Pack 4; Windows ME; Windows Server 2003; Windows Server 2003 Service Pack 1; Windows Server 2003, Datacenter x64 Edition; Windows Server 2003, Enterprise x64 Edition; Windows Server 2003, Standard x64 Edition; Windows Small Business Server 2003 ; Windows XP; Windows XP 64-bit; Windows XP Embedded; Windows XP Embedded Service Pack 1; Windows XP Embedded Service Pack 2 ; Windows XP Home Edition ; Windows XP Home Edition N; Windows XP Media Center Edition; Windows XP Professional Edition ; Windows XP Professional N; Windows XP Service Pack 1; Windows XP Service Pack 2; Windows XP Starter Edition; Windows XP Tablet PC Edition

Using Managed DirectX ( MDX ) requires both Visual Studio .NET and the .NET framework for development. To run MDX .NET applications, you must install the .NET Framework.