I just fixed all driver links on the 3dfx FAQ page.

You can download there the follow drivers:

Canopus Pure3D
Windows 2000/XP drivers for Glide/OpenGL only

Canopus Pure3D II
Windows 2000/XP drivers for Glide/OpenGL only

Voodoo
Windows 2000/XP drivers for Glide/OpenGL only

Voodoo2
Windows 2000/XP drivers for Glide/OpenGL only

Tweak-Voodoo
How to setup & list of Voodoo1/2 Environment Settings.

Voodoo3/4/5
Windows 2000 drivers for DirectX/Glide/OpenGL
Windows XP drivers for DirectX/Glide/OpenGL

Voodoo Banshee
Windows 2000 drivers for DirectX/Glide/OpenGL

Voodoo Rush
Windows 2000/XP drivers

Quantum3D Obsidian(R)2 S/X Series Voodoo
Windows 2000/XP drivers for Glide/OpenGL

Visit 3dfx FAQ