If it was working, my guess is that you do not need to remove anything. Did you update the Linux kernel? (I recall they released a patch a couple weeks ago.) If so, and if you installed the NVIDIA driver from the command line (hard to tell based on your post), you may need to reinstall the NVIDIA driver. In your situation, and if you are running a 32-bit version, I would consider following the directions from SUSE:
1) Kernel sources must be installed and configured. Usually this means
installing the 'kernel-source', 'make' and 'gcc' packages with YaST2.
2) Use the nvidia installer for 1.0-9746.
sh NVIDIA-Linux-x86-1.0-9746-pkg1.run -q
3) Configure X.Org with
sax2 -r -m 0=nvidia (0 is a digit, not a letter!)
NOTE: There is no need to try to enable 3D support. It's already
enabled, when the nvidia driver is running.
IMPORTANT: You need to recompile and install the nvidia kernel module
after each kernel update.
PS: If none of this makes sense, it may be more understandable if you start here: