In GNU/Linux distro is the word!
for different flavours of same OS.
for installing in fedora,u may need to login as root and start the installer.
from login screen login as root,then try the installer
edit:U can go through mauriett miranda's page for fedora 7 on almost every thing u need to!
*www.mjmwired.net/resources/mjm-fedora-f7.html
*www.mjmwired.net/resources/mjm-fedora-f7.html#nvidia
arey! u shud have configured yum(like windows update service in windows) for fedora!it automatically can install nvidia drivers!
*ubuntuguide.org/wiki/Fedora_fc5#How_to_install_Graphics_Driver_.28NVIDIA.29
and do read:
*ubuntuguide.org/wiki/Fedora_fc5
and research in GOOGLE,configuring yum in fedora 7
supposing u got internet configured on Fedora
^^ as u can see there are pleanty of resources.GIYF(google is ur friend) esp Google.com/linux best of Luckx