Basically do this
Go to livna.com and go to fedora 9 repo ,install gpg key and install livna display config it is self explanatory-but there is a read me step by step.
Using yum in terminal.once you have repo key from livna its all easy >add and remove packages,codecs,vlc player,xine and all free games and apps. (:^D).
As with most things its simple when you know how. ps have installed FC9 and its sweeeeet.
Nvidia drivers install and switching is documented on livna start page,can be done in yum or through terminal with legacy drivers from Nvidia.
Next time show a little patience as Nvidia are not proprietary drivers like ATI and Nvidia drivers won`t load automatically until you have the repo key,whereas ATI have legacy drivers built into the distro,this is the same for all linux not just fedora core.