Running NW65SP7. We have public DNS records (hosted by a service provider)
for our domain such as ny.mydomain.com. I've setup an internal DNS server
to handle internal inquiries under lan.mydomain.com ("lan" is not a public
host). Everything is so far good.

What I'd like to do is have ny.domain.com resolve to an internal IP address
for users on my LAN who are using our internal DNS server (the workstations
are set to use only the internal one). I tried setting up ny.domain.com as
an A record under lan.mydomain.com but this obviously didn't work.

Do I have to setup a secondary zone for domain.com on my internal DNS
server? If so can I setup a different A record for "ny", or is there a
different trick to this?

Thanks in advance
James