V13.1 KDE, How to change graphics driver

How do you change the graphics driver with KDE Opensuse V13.1?

"nouveau" got installed and I want to try the nVidia driver


OS_Type: openSUSE 13.1 (Mantis) 64 bit
Kernel: 3.11.10-7-desktop x86_64 (64 bit)
KDE 4.11.5

Thank you.