SlackBuildsOrg/system/nvidia-legacy340-kernel

This is the kernel-module needed by the proprietary binary nvidia
driver. You also need the nvidia-driver package from SlackBuilds.org.

To build the package for a kernel different from the running one,
start the script setting the KERNEL variable as in
    KERNEL=3.2.34 ./nvidia-kernel.SlackBuild

A default config file is placed at
/usr/share/X11/xorg.conf.d/10-nvidia.conf to make sure that X loads
the nvidia module. If you need to make changes, copy that file to
/etc/X11/xorg.conf.d/ and edit the copy. You do not need this file at
all if you have a proper and complete xorg.conf.

The xf86-video-nouveau-blacklist package from /extra is required.