Under the 11.04 and laters the default driver for the Nvidia cards are the
nouveau but they can't be installed on the same machine with the official nvidia driver, so you have to purge that package before installing the nvidia closed source driver.
sudo apt-get --purge remove xserver-xorg-video-nouveau
after that install the driver trough jockey-gtk ( "Additional drivers" dialog )
After that you can manage your configuration files with the
nvidia-settings package, so install it with
sudo apt-get install nvidia-settings
and start the control panel with
this is the right procedure in a nutshell, looking at your report you probably miss the config files so if you do not want to do by hand install and use the nvidia-settings utility.