A RenderContext question

Hi, Does anyone have a clue about how you''d create a render context from a C# Graphics object? I create a bitmap 100 pixels by 100 pixels, then a Graphics object from it, but I can''t find any way to create a render context from it, all of the PixelFormat fucntions fail! Any ideas?? http://focus.programmersnet.com it''s got my C# opengl library on it, check it out!