You can find the following 3Dfx Voodoo drivers @ Voodoofiles.com:

2/17/2003 - 3Dfx Voodoo Banshee Driver Kit for WinXP - v1.02.03 beta 2/17/2003 - 3dhq Voodoo4/5 W2K/XP 1.09 Beta 10 drivers 2/17/2003 - 3dhq Voodoo4/5 W9X 1.09 Beta 10 drivers 2/17/2003 - 3dhq Voodoo3 W2K/XP 1.09 Beta 10 drivers 2/17/2003 - 3dhq Voodoo3 W9X 1.09 Beta 10 drivers