Setting Up DNS

[Adam Rumpke]

Does anyone in the group have a spare moment to help me while I
attempt to set up a router and DNS?

My Goals 

1. Build a small linux router for my mail server and web-server. <<
Using RH ?
2. Set up the DNS so if I type mmm2.mct.co.jp I get the extranet. <<
???

Our company already has the mct domain and DNS for the main server but
I am trying to make a sub domain (is that what it is called? ) for a
test extranet. I am new to the whole DNS world and rank below newbie.