Wow... vortexofsound.com is... gone.

That used to be 'the' spot for Vortex info/drivers.
Btw, someone had some patched drivers for Vortex2's for WinXP put up somewhere. I'd like to find those myself, I recently found and re-installed my Vortex2 SQ2500 OEM card. The problem is, the stock Windows in-box drivers don't support 3D sound. The OEM Vortex2 beta drivers do, except those drivers were written to assume that the system chipset is an i440BX, and if you're running on a more recent Via-based chipset, they will re-program your chipset config registers to do wild and whacky things, like corrupt data, kill the onboard sound, and crash pretty hardcore. Depending. (Trust me on this - don't try it at home. Not good for your data.)