Need some help with windowsx.h compile error.

I am trying to compile source code that is from the book Programming a Multiplayer FPS in DirectX by Vaughan Young. It has been a task to say the least. My latest complie error has to do with windowsx.h..

fatal error C1083: Cannot open include file: 'windowsx.h': No such file or directory

Anyone have any suggestions. Were is windowsx.h suppose to be located?

Thanks

Chad

Are you using a Windows compiler or something like Turbo C?

VC++ 2005 express....

You just made me think of something....I wonder if the Platform SDK is installed on this machine.....hmmm...going to check now....