# pacman -S nvidia && modprobe nvidia
:: nvidia-1.0.8774-2: is up to date.  Upgrade anyway? [Y/n] y

Targets: nvidia-1.0.8774-2

Total Package Size:   1.5 MB

Proceed with upgrade? [Y/n] y

checking package integrity... done.
loading package data... done.
checking for file conflicts... done.
upgrading nvidia... done.
-------------------------------
By using this package you accept the NVIDIA license,
which has been installed in /usr/share/licenses/nvidia/LICENSE
If you do not accept this license, you must remove the package immediately.
Dont forget to update your /etc/X11/xorg.conf
-------------------------------
ERROR: Module nvidia does not exist in /proc/modules
In order to use the new nvidia module, exit Xserver and unload it manually.
FATAL: Could not open '/lib/modules/2.6.17-ARCH/kernel/drivers/video/nvidia.ko': No such file or directory