WGL_NV_DX_interop help: example code

Hi everybody, I’m trying to share a texture created in OpenGL between a directX texture. (I’m using directx9). I’m havin some problems because i can’t find no example code in the web. Has anyone some code in order to list the steps needed for this kind of sharing (what API to call) and above all how to draw in the render function?
Tks everybody,