You must !! install the driver in runlevel 3 otherwise you could not chage the nv-kernelmodule it's used !!!
I download the tar-file - change to /tmp - then tar xfz NVID... (both kernel and glx) - change to the directories - type make and make install - that's all.
If I compile my kernel new or install some new software (with yast), I have to do it again because make modules_install remove the nv-kernelmodul and yast sometimes unlink the glx. But thats no problem.
I use the rpm-packeges of the older driver before but I have problems with TV out.
Now everthing works - but I'm not playing game with my computer so I don't know if there are problems. In the X window "gears &" shows about 2700 f/s.