Hi Mnrao. Your question is very confusing. I really cannot tell what it is you are asking. Can you get someone to help you re-write the question so it is more clear please? Thanks.
If your DNS is Active Directory Integrated, it will be very easy. Setup your new server as a new domain controller with DNS installed. DNS will automatically transfer zones to the new DNS server.
In DHCP once all DNS is transfered successfully, change the DNS address to the new server in your DHCP settings.