Ansible has put up a tutorial about getting the 3dfx Voodoo 3/4/5 working on Windows XP with all tools.
"As most of you know Nvidia purchased 3dfx Interactive, and have not lifted a finger to support existing 3dfx products. They basically bought out 3dfx to kill the company and boost sales of their own products. With the release of Windows XP, Nvidia has decided to shaft 3dfx owners by not creating compatible drivers for the new operating system. What does this mean? Well users of the Voodoo line of 3dfx card will not able to use all of the features that their card was intended for when they upgrade to Windows XP. Before, users had support for 3D API engines such as GLIDE, OpenGL and Direct 3D. With the new operating system, GLIDE and OpenGL support are gone and games like Quake 2 and 3 (which run under OpenGL) cannot be played by these users".