If you don't have a Voodoo card you need to use something called a Wrapper. A wrapper is basically an emulator for Voodoo. I'd recommend using Evoodoo, but there's prolly better wrappers out there. you just gotta extract evoodoo in the proper directory and select Glide64 as your plugin and it should work. (sorry for the crummy explanation but I am NOT good at this, lol.)