forward zone for reverse delegation

[Gian]

hi,
i've got 2 blok ip say 192.168.1.0/24 and 192.168.2.0/24 and registered
in APNIC with primary NS in 192.168.1.2 and secondary NS in 192.168.1.3
for domain xxx.net.
i want to forward 192.168.2.0/24 for reverse delegation, and my
named.conf(primary NS/192.168.1.2) is like this :

zone "2.168.192.in-addr.arpa" {
	type forward;
	forward first;
        forwarders {
               192.168.2.2; //primary NS
               192.168.3.3 //secondary NS
        };
};

my question is :
1. is my configuration in that named.conf correct??
2. how to configure secondary NS

thx
-Gian-