The problem is the Vanta is an old card. It was not specified if it was a TNT Vanta card or a TNT2 Vanta. If it's a TNT vanta, then you'll have to do some digging on the Nvidia site to find their driver archive, as they stopped supporting that card a couple of years ago. I think drivers around the 3x.xx or 4x.xx series was when they lasted supported the card in their drivers.
If it's a TNT2 Vanta, then you can just download the latest drivers from Nvidia as they still support the TNT2 card, though probably not for much longer I suspect.