[Error]d3dx9.h Come .

Always I'm trying to build a CombatArms menu hack I have that error : [php]1>------ Build started: Project: CaBase, Configuration: Release Win32 ------
1> Base.cpp
1>c:\documents and settings\***\my documents\visual studio 2010\projects\cabase\cabase\Files.h(15): fatal error C1083: Cannot open include file: 'd3dx9.h': No such file or directory
1> DirectX.cpp
1>c:\documents and settings\***\my documents\visual studio 2010\projects\cabase\cabase\Files.h(15): fatal error C1083: Cannot open include file: 'd3dx9.h': No such file or directory
1> Menu.cpp
1>c:\documents and settings\***\my documents\visual studio 2010\projects\cabase\cabase\Files.h(15): fatal error C1083: Cannot open include file: 'd3dx9.h': No such file or directory
1> Misc.cpp
1>c:\documents and settings\***\my documents\visual studio 2010\projects\cabase\cabase\Files.h(15): fatal error C1083: Cannot open include file: 'd3dx9.h': No such file or directory
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
[/php]

Hope someone here can help me Thanks .