the name Administrator comes from Windows (eeeek) forget it. In linux it's called root. Normally you works as user and only become root, when it is needed (e.g. to change a file). To become root in a console use this command :
so now you can type the name of a programm or command and it will start as root. (Be aware of deleting too much).
And only a few people now use up2date , most use yum or apt and for it : http://fedorafaq.org/#installsoftware
has a better instruction. So try it our.
For you internet problem:
use this 2 commands as root:
echo "alias net-pf-10 off" >> /etc/modprobe.conf
echo "alias ipv6 off" >> /etc/modprobe.conf