how should th eDNS be configure in a child domain, and if it need to do a 2way trust with external domain

My HQ  in London    is  a Windows 2000 server DC.  Domain name : domain.loc    (192.168.100.10 /24)

I am joining  the branch office in Malaysia . Will be going to setup a child domain in Malaysia using
windows 2003 Server.  Child domain name will be   asia.domain.loc

I understand that in this asia.domain.loc  domain controller need to point the DNS to this DC (192.168.100.10 /24) .
But I am unsrue and already tried out, but not working such that. I want to run a DNS in this asia.domain.loc .

In this case, I will need to run the DNS wizard here, but I do not know what option to follow and run to setup a DNS for asia.domain.loc in this child domain .

I had read on some experts-exchange and comments from users, but they only refer me to reaf on technet and support on MS website, thsoe are on theory which I already run about, but I do not get a good practical advise, and steop by step advise on how DNS should be configured in my child domain in asia.domain.loc  .

Please assist me, because I spend a lot of time doing hands-on and reading, but do not have a clear direction.

Thank you