Graphics Driver Problem

For months and months, i download my graphics card to update it. NVIDIA RIVA TNT2 Model 64/Model 64 Pro (Microsoft Corporation) i have Version 5.1 and trying to update to 7.8.

Is there a way to fix this? It says it is not compatable with any of my hardware.

I am trying to Fix my prob here: http://www.aqua-soft.org/board/showthread.php?p=465662

#465667