yes you have to install the nvidia drivers to get 3D Accell
easiest way to install is... first download the driver from nvidia
Fire up a terminal..
su
urpmi kernel-source
init 3
sh NVIDIA-whatever-the-file-name-is
follow instructions
vi /etc/X11/XF86Config-4
replace "nv" with "nvidia" and make sure you have load glx at the top. Also at the end of the nvidia install it will give you a path to a doc. Go over that file and it will give you all teh XF86Config options for the nvidia driver.
afterwards run
init 5
this will get you back to that familiar place with 3d accell