http://www.geforcefaq.com
Q. What is the difference between the 3.xx, 5.xx, 6.xx,
7.xx and 10.xx versions of the drivers?
The 3.xx versions of the drivers are the first set of NVIDIA's unified drivers to officially support the GeForce.
The 5.xx versions of the drivers support S3TC in OpenGL and full scene anti-aliasing (FSAA) (in OpenGL, and in Direct3D as well in the 5.22+ drivers). However, for some people they also cause lockups when they load Windows, so that some people simply cannot use them yet. They are also faster than the 3.xx drivers in most cases.
The 6.xx versions of the drivers are faster and have a new NVIDIA control panel with extra FSAA options and information, and extra support for the GeForce2 MX. However, they may cause problems for some people.
The 7.xx versions of the drivers are optimised for DirectX 8.
The 10.xx versions add native support for 3D glasses and support for the GeForce3.
GENAUERES HIER: "What Windows 9x drivers should I use?"
http://www.geforcefaq.com/#sw:drv:what9x