I was very happy to find this page, especially since I was using Slackware, which doesn't load much of anything by default:
light bulb goes on here----->
You need to edit a startup script, or add one to load the NVdriver each time linux starts. For me and my Slackware 8, it was /etc/rc.d/rc.modules. There are other ways to do it, depending on distro or preference.
(path-to)/modprobe NVdriver should do it.