how to create new list?

[spydrman @ jacksonesd . k12 . or . us]

Ok, newbie question: What is the process for defining a new list?  I
know I can edit the info text file after the list is created?

Also, our dns entry is mdserve.jacksonesd.k12.or.us.  What config file
do I change to make replies come from majordomo@jacksonesd.k12.or.us,
and not majordomo@mdserve.jacksonesd.k12.or.us.

Thanks.