can not stop nouveau at run level 3 to install nvidia driver script

On a fresh install of opensuse leap 64 bit, I can boot into run level 3, but am unable to stop nouveau from loading. The box has the nvidia 6200 video card and I see that yast does not support it. The nvidia run file writes 2 nouveau disable files in modprobe.d folder, but on reboot, the run file detects that nouveau has not been disabled and stops. I have 3 video driver files in yast:
libdrm_nouveau2
xf86-video-nouveau
xf86-video-nv

The xf85-video-nv I installed hoping it would stabilize the video. I thought about deleting the 2 nouveau drivers in yast, then rebooting, but not sure if that would cause a crash.