Bro, If u are having a AGP/PCI-e card (a.k.a. Graphics Card) wich is of Nvidia and If u are seeing this page--->
www.nvidia.com/content/drivers/drivers.asp then under
Start here section, u can select the Graphics driver, then move on to choose b/w Ge force/TNT2/<any other choice depending on ur AGP/PCI-e card> tat u hv it installed on ur AGP=PCI-e slot on ur motherboard and then u can select b/w the OS wich u hv it installed on ur system.
U can then d/load the drivers for ur AGP/PCI-e (e for express) card.
Remember: the drivers for ur mobo are different than those for ur AGP/PCI-e card (a.k.a Graphics card). Read ur motherboard manuals as they will giv u an idea abt wat u are having on ur Motherboard.
Cheers n e-peace....