unix and active directory

Hi
Does anybody know the steps and requirements of the installation process of Windows Active Directory using Unix/Linux Bind DNS.

I will appreciate if somebody gives the answer.

Active Directory is Windows (as you know), and doesn't run on UNIX. Samba can provide 'similar' functionality from a UNIX server, but does not support the replication "feature" of Active Directory, AFAIK.
However, you could set up Kerberos, BIND, and Samba, and use the server as a Domain Controller for a Windows [NT] Domain. There are countless how-tos on the web, Google is your friend.