How to Configure Domain server in linux?

Hello Friends,

REQUIREMENTS:

1. Want to configure Domain controller in linux, it is possible to create?

2. Want my domain name as www.sandeep.com

3. Need to create some users in server (Exp: abc@sandeep.com, xyz@sandeep.com)

4. Want to ping server by other machine in Intranet.

5. Want to login users in other machine, which one has created in server by root.

6. Need to give some perticuler permission to users.

7. Want to configure Roaming profile.



NOTE: How domain control will work in Windows 2003 same things have to do in Linux4.

Thanks & Regards,
Sandeep CC