LoveAeris,
I'm used Rivatuner just to create a set of patched softgl drivers (then I deleted rivatuner). I'm not sure if the solfgl script (in rivatuner) supports the latest ati drivers. I'm using an older driver than the one you pointed to (ver 7.88.4.1).
Driver Version 6.13.10.1034 filename...
I am also using am ATI 9500 Pro, upgraded bios to 9700 Pro and overclocking it. I also used the Soft-Fire GL drivers and it works great for all of my 3D cad stuff (SW2003, Mechanical Desktop, & Inventor).
LoveAeris,
Instructions are here:
http://www.nvworld.ru/docs/sfgl_e.html