/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0 BOOTPROTO=static IPADDR=192.168.0.2 NETMASK=255.255.255.0 GATEWAY=192.168.0.1 HWADDR=00:00:00:00:00:00 ONBOOT=yes
DEVICE=eth0 BOOTPROTO=dhcp HWADDR=00:00:00:00:00:00 ONBOOT=yes
/etc/resolve.conf
search domain.com nameserver 192.168.0.1
/etc/rc.d/init.d/network restart