thx Rubini for your tweak-guide.
I downloaded nhancer and followed your guide-lines in the first post thoroughly. though it didn't fix my problem with the sun-halo, but I got more fps in every map or exterior view.
even my old 6600GT is now capable of around 50fps when on bridge in stormy wheather, around 85 in 2d-maps and 35fps in control-room.
the textures seem now bit lighter and sharper and the edges are better rounded.
thx again for sharing your knowledge!
