How to create a fake root server?

[Peter]

Hi guys,

I'm doing a virtual internet (internal net) for several VPS's. My goal 
is to simulate the Internet root servers and the ISP:s domain servers, 
which are hosting the actual domains. I want to the create several DNS 
nameservers that will contain the specific domain under the "xxx.loc, 
yyy.loc, zzz.loc".

1 server for the .loc root
3 servers for xxx.loc (server1), yyy.loc (server2), zzz.loc (server3)

Running BIND 9 at every server.

Any suggestions or good links are highly appreciated.

Best regards,
Peter