Domain re-direction

[David Frank]

Greeting,

	I have recently been tasked to create a re-direct from a recently
purchased domain to our existing one. I believe I have read that it is not a
good idea to have multiple master zones running on your primary DNS server.
Currently we have 1 external DNS server and our ISP is our backup. If we own
"domain.com" but we want "superdomain,com" to point to a site within
domain.com, do I need to create a new master zone, or can I just create a
CNAME record, or do I need to build a new DNS server for the new domain?

Thank you for your time,

David Frank