Beetle,
Do you mean you want your nameserver to work while you're waiting for your new license?
If so, then the files to edit are /etc/named.conf and /var/named/* (the /var/named subdirectory includes the zone files, in the format example.com.db).
After editing/creating the proper files you do need to restart bind:
# /etc/rc.d/init.d/named restart
As far as what those files need to look like; well a complete DNS tutorial is well beyond the scope of a forum; even beyond the scope of a specialized forum such as the mailing list sponsored by the folk who wrote BIND.
Usually, there, we recommend books such as the O'Reilly book, "DNS and Bind".
Jeff