For fun
I used to do a bit of work with
PE Explorer before my brain exploded a few years ago.
Open up the graphics.dll in IL2 and have a look in there.
You will see the various calls on the shaders and 3d management.
Its no easy thing you are asking for TD probably impossible without the original coder who made the .dll
Unless they can put an extra line in the conf.ini OGL section for ATI to use NV shaders say like
TexATI.Nv=1
then use the dll to link over.
Pure fantasy though