networking

Hi,

I have some query
regarding the name server which I have to put into the /etc/resov.conf

currently we have a dns 203.126.241.50 and now I configure another PC for my
practice use.

I edit 3 files for another PC such as
1)vi /etc/hosts
2)vi /etc/sysconfig
3)vi /etc/sysconfig/network-scripts/ifcofg-eth0

the hostname that I configure is dns3.duraco.com.sg
IP address: 203.126.241.155
gateway:203.126.241.49

I can ping to my gateway but I can’t ping to 203.126.241.50

I try to put the nameserver as 203.126.241.50, when I try to use the
nslookup command, it said that no domain server found.
may I know normally what we put in the nameserver ??

please assist

hoay fern