What is the type of the machine? What operating system do you need the driver for?
A search for "GeForce4 440 Go" on Nvidia's website brought up only unix drivers, but some press releases too about different kind of machines which were equipped with this card.
In almost all cases, support for laptop drivers is from the laptop manufacturer. Check on their support site for the drivers. You may find something from nVidia but it seems from the above post, they are not there.