help me please

first of all need some advice on me computer,
i am runnin a:
P3 coppermine 800 mhz
20 GB HDD
52x CD-Rom
184mb Ram
Nvidia Riva TNT 2 Model 64 PCi Graphics card,
Logitech Attack3 Joystick.
which would i be better off upgrading the motherboard / processor, or the memory/graphics card????
Secondly i just want to say that FS2004 is the best flight sim out there at the moment, just bought it today and i am over the moon with it,
i'm so used to FS98 that the actual aircraft are more astheticly pleasing to the eye,
this is my first post btw.
John
i am runnin a:
P3 coppermine 800 mhz
20 GB HDD
52x CD-Rom
184mb Ram
Nvidia Riva TNT 2 Model 64 PCi Graphics card,
Logitech Attack3 Joystick.
which would i be better off upgrading the motherboard / processor, or the memory/graphics card????
Secondly i just want to say that FS2004 is the best flight sim out there at the moment, just bought it today and i am over the moon with it,

this is my first post btw.
John