Installing nVidia drivers on FC10

[Dave Bolt IT Solutions]

OK, I'm confused now.
I managed to download a package from rpmfusion.org and install it.
I now have the following configuration options available in gnome.
System->Preferences->Hardware->Screen Resolution
System->Administration->Display
Applications->System Tools->NVIDIA X Server Settings

The Screen Resolution option tells me that the monitor is Unknown, with a 
maximum available resolution of 1024x768 and 50, 51, 52, 53 and 54Hz refresh 
rates only. The Detect Displays button does not make any changes. Reducing 
the display resolution worked immediately on apply, but trying to put it 
back to 1024x768 failed, although restarting allowed the display to revert 
to 1024x768

The Display option allows changing the resolution lower than 1024x768, but 
requires restarting X-Server to apply the changes. After a restart and 
changing to 800x600, the highest resolution available is 800x600. Manually 
editing the /etc/X11/xorg.conf file and adding in a number of missing 
resolutions, and restarting, I can change the resolution in the Display 
application, or in the Screen Resolution application. Again, changing the 
resolution in the Display application reduces the list of possible 
resolutions to the one selected.
Using the Display application, I can force the monitor model and make, but 
the information is not added to the xorg.conf file.

The NVIDIA X Server Settings application allows me to see the correct 
graphics card and monitor, both automatically detected. Changing the screen 
resolution and saving to the configuration file appears to work and reports 
that X-Server needs to be restarted, but there is no change in resolution 
when the system restarts into gnome.

Any explanations?
Thanks
Dave