Voodoo 4 PCI compatibility problems on Direct X v.8.0a, (and Open Gl)

OK, my problem is with my voodoo 4, and it runs extremely poorly on Quake 3 Arena (When using open gl, even slower without), but is really fast on Unreal Tournament (3dfx glide, open gl quite slow) and my drivers are all uncertified! I tried the one driver at 3dfx.com, but it wasn’t direct X v8.0a compatible, and i’ve got every driver that could work! but none seem to be compatible on my system! Also when I tried the Open gl drivers, my system whould freze up after 5 minutes! so if there’s another voodoo 4 PCI user out there, HELP!