Its usually easier if you install the drivers befor you remove the old card. They do not take effect until you reboot and they will be there after you install your V3 and turn it on for the first time.
Make sure you add a 486 fan (right to the factory heatsink) and clock thet baby up. My card does 160 cool (I have a very cramped case with poor cooling), ran 170 100% stable, but have not tried higher. The Voodoo3 3000 normally runs at 166 but I have heard most can run stable between 170 and 180.
AMD Phenom II x4 945 3Ghz | ASUS M4A77TD | 2X WD 1TB SATA 2 hard drive | 2x2GB Corsair XMS3 | nVidia GeForce 8800 GTS | ATI TV Wonder Theater Pro 550 | Antec P-160 case | Antec 650w Earth Watts | LG Blu-ray Super Drive | LG DVD RW | Windows 7 Pro