by default, the root login would be " root ", and this can't be changed, am i right to say that?
okays, anyways, i'm on a local area network here connected to internet as well. so, how do I configure red hat linux enterprise linux 3 here to connect to the LAN?
The GUI program for network configuration is 'redhat-config-network'. You can try running this as a command or it should be in the menus. If you don't have it installed try installing it with
yum install redhat-config-network #assuming the guy you took it over from setup yum
You could also do it by editing the config files directly. The files are:
/etc/sysconfig/network - set hostname and default gateway, eg:
/etc/sysconfig/network-scripts/ifcfg-ethX - where X is the number of the network interface you're using. They are numbered up from 0 so the first interface in your system will be eth0, the 2nd eth1 etc.
eg for static IP:
for dynamic IP: