It is not heck or crack; it is plug-in and works in normal legal version of IL2FB-PF. I am sure of it; I have read all on developer's site and tried it. And it is really working, but unfortunately only in DirectX.
I am not a programmer but maybe it is not so difficult for someone skilful to make it for OpenGL. IL2 still remains unmatched in OpenGL effects.
Here is it here:
http://www.mediafire.com/?lmhyt2jtffd
And this is developer's site:
http://boris-vorontsov.narod.ru/
Also some screenshots:
