Network disconnect in fedora 9 x86_64

Using a x86_64 DVD version of Fedora 9, I have installed the system and noticed an issue: the network is not active. The issue seems to be with NetworkManager service.
To resovle the issue, follow these steps –
#vim /etc/sysconfig/network-scripts/ifcfg-eth0

and add line or change it, if already there-
NM_CONTROLLED=yes

If you like to use GUI than execute this command as root
#system-config-network
it will open a Network configuration window. Edit eth0 configuration. Select the checkbox “Controlled by NetworkManager”.

Once you have made the changes by either way reboot the system. It should enable the network.