I have read an article about processor test. One thing they used was 3D Mark which was supposed to show game performance.The result was very small differences between the slowest Athlon XP 2200+ and the fastest the Pentium 4 3.4 MHz. And their conclusion was if you wan't a strong game performence you should not spend the money on fast CPU but rather on a graphics card.How valid is this regarding the FS9?I have nowSoltec MotherboardAthlon XP 1800+512 M RAM 333 MHzAsus v8170 GeForce 4 MMX graphics cardWin XPIs this bad for FS9? Can I get a significant increase in Performencefor FS9 if I upgrade some component here for a modest cost?

Both CPU and Graphics card are very important. You won't get anywhere with just one. You need both.