First try to use
in the Section "Screen" of /etc/X11/XF86config (or something like that iirc), because I don't think that your Suse version uses the new /etc/X11/xorg.conf.
If that doesn't work then you can try and see if any of these
legacy drivers works with your kernel. Before building the driver, you must make sure that you have kernel-source package installed.
If all of the above fail you can use other driver, like svga or vesa, but you cannot have the benefits of the nvidia driver.