ID3DXIntersect returns the point on a triangle that was hit by a ray if there was a collision. Unfortunately it returns this point as a barycentric coordinate (U,V), and this is of ABSOLUTELY NO USE to me. How would I go about turning this barycentric coordinate into a vector (X, Y, Z) I can use to represent the hit point?

P = u * p1 + v * p2 + (1 - u - v) * p3, where p1,p2,p3 are the vertices of the triangle.