Fedora Installation :: Updates After Install And Repo Lists / Saying Repo Not Found?

i'm attempting to know and understand fedora more and i will spend probably the next month pouring through all the forums and documents to answer more of my own questions. but there's quite a bit here, so i'd thought i'd ask some noob questions to get me started a little.

ive installed fedora 14 64bit and chosen only kde as the desktop. i selected an extra 2 repos besides the default, fedora 14 -x86_64 and fedora 14-x86_64 -updates. i believe this kernel is installed: 2.6.35.11-83

1. i can only see the 2 extra repo's as being "checked" in kpackagekit, shouldn't i see the default repo also ?

2. i dont have an applet in the system tray indicating the system is up to date, does fedora have this by default ? also after a clean install i ran yum check-update and yum update but the message sayes: "no packages marked for update". i'm not sure if the system is auto-updated during install or not, but with other distros iv tried there is always atleast a few updates needing to be done after install.

3. is kpackagekit the fedora gui package manager ? i dont see any others.

4. i want to upgrade to nvidia drivers, but i think i am missing a non-free repo or something. when i enter: yum install kmod-nvidia xorg-x11-drv-nvidia-libs.i686 xorg-x11-drv-nvidia-libs.x86_64 i get messages stating "no package" i get the same message with yum install nvidia-settings.i also tried this: LANG=C yum --enablerepo=rpmfusion-nonfree info akmod-nvidia but it sayes repo not found.