Hi everyone; Does anyone know of a good tutorial on 3D vectors? I am trying to get more into programming 3D environments with C#, but I am only in Precalculus in high school, so I really don't have hope on covering 3D vectors there. I am looking for basic things; common formulas, concepts, and anything else that might be useful. I really hope I don't sound too much like some kid in way over his head; I have been, for the most part, good at math, and teaching myself concepts that I have not been exposed to before. Thanks very much! Sean Mealin seanpm@xxxxxxxxxxxx