Hi Myxale,
I have used this modification in Steelbeats Pro PE. If I recall correctly it was the GTA version. It does change the graphics quite a bit giving a more 'real-world' look to objects like blurring, better shadows and sunlight, although you have to play around with the settings quite a bit to get it right. It also has a hit on FPS the more you change.
I did once (and I stress once!), try to get it to run SH3 but the system just crashed each time, so I didn't continue with it.
However, if the guy behind it can do something for SH3 it would be worth a shot
Cheers!
Px3000