FS2004 USERS....

How do i sustain an extremely powerful smoothly running FS9?
I have 3GB RAM
ATI Radeon X1600 Series GFX card with latest drivers downloaded
i have defragmented my pc and done a disk clean-up but im still not getting a smooth running sim, its still very jumpy and textures for ai planes take time loading up! i do use WOAI and have over 200 airlines operating, but ive seen so many videos and i know that its possible to get a very good smooth sim!!! but how!?!?
I have 3GB RAM
ATI Radeon X1600 Series GFX card with latest drivers downloaded
i have defragmented my pc and done a disk clean-up but im still not getting a smooth running sim, its still very jumpy and textures for ai planes take time loading up! i do use WOAI and have over 200 airlines operating, but ive seen so many videos and i know that its possible to get a very good smooth sim!!! but how!?!?