I know you can improve FSX's graphics with addons, in-game settings and editing fsx.cfg, right? So... What should I change to get better graphics?

*I've got the FSX.cfg Editor*
I've got a nvidia Geforce GTX 560 and a intel core i3 processor.
No, I know the processor ain't very good but my graphics card is :-)
So, please help me! What should I change? I couldn't find any helping guide on the internet.
//Julius













