Well, as the subject suggests... I have a question regarding graphics and chipsets.

I'm going to build a computer for a friend and he likes to play flying games. The first idea that went into my head is Voodoo card but, what'll happen if you play a game designed for Voodoo acceleration but have a TNT card? Or, what if you have a Voodoo card and want to play games design with TNT? How does something like that work?

I've heard about some people using a TNT card and having Voodoo's in SLI but this guy doesn't have a very big budget and I was wondering what the best solution is? Does anyone think they can quickly explain how this is all supposed to work?