Lighting

As some of you may know im creating a directx dll for my RPG and i have come to the lighting section, Just wondering if you kind folks knew of some good tutorials or tricks for directx 9.0 (managed) lighting, my current launguage is VB.net so that would be preffered of course C# is fine as there are many translation sites around :)... PS so far i have Initialising, Clear,Begin Screen, End Screen, Present, Functions for checking display settings, Drawing and manipulating vertex buffers, Meshes and annimated meshs done, allong with input so its actually getting there finally, with much help from all of you here :).