[CentOS] How to setup a "secondary DNS server" pulling zones from Win2k3?

Ok, figured it out:

# cat /var/named/chroot/etc/named.conf
options { directory "/var/named"; };

zone "internal.mycompany.com" IN {
        type slave;
        file "slaves/internal.mycompany.com";
        masters { 10.121.42.40 port 53;};
        check-names ignore;
};

zone "121.10.in-addr.arpa" IN {
        type slave;
        file "slaves/10.121";
        masters { 10.121.42.40 port 53;};
        check-names ignore;
};

include "/etc/rndc.key";