Hi all, I've been working on a demo/tutorial aimed at showing how to implement a first person style and flight simulator style camera in Direct3D9. It's a vector based camera and uses the math routines from the D3DX helper library. Two main C++ classes are provided: the Camera class, and the Mouse class. The Camera class contains all of the vector math, and the Mouse class contains the logic to process raw mouse data (using the Windows XP raw input model APIs). I'm hoping that beginners will find this demo useful. The demo and source can be downloaded from here.