I have an ATi 1650 with 512 meg RAM on my main PC. You mention that your system is new, but it uses AGP, not PCIE? I wouldn't have thought any new systems these days were AGP.
I get good fps for FS, IL2 and other gaming, I think my driver is Omega, will turn the system on soon and take a look and update this post

EDIT:
OK, I do have an ATi X1650, not sure it's a Pro.
As for the driver version I am using ... I can't actually work it out (duh). It is either;
7-12_xp32_dd_ccc_wdm_enu_55811.exe (45 megs), or,
rad_w2kxp_omega_38221.exe (25 megs)
The Catalyst Control Centre doesn't have any reference at all to Omega so maybe it's the first driver mentioned above.
Sorry I haven't been too much help Kahu
