help on deleting a custom chain.

[hallian hallian]

hello all -

I have created a custom chain which wil keep all the icmp related 
connections bundled together.  So, these are the steps, but I have problem 
trying to delete the chain as it being referenced in another chain.

these are the commands:

1) iptables --new-chain myicmp
2) iptables -A INPUT -j myicmp

3) iptables -A myicmp -i eth3 -p icmp -m icmp --icmp-type echo-reply -j 
ACCEPT
   iptables -A myicmp -i eth3 -p icmp -m icmp --icmp-type time-exceeded -j 
ACCEPT
   iptables -A INPUT -i eth3 -p icmp -m icmp --icmp-type echo-request -j 
ACCEPT

4) iptables -F myicmp
5) iptables -D myicmp
iptables: Can't delete chain with references left

Which is true..... when I do a iptables --list it shows up in the INPUT 
chain but the rules are flush out from the myicmp chain.

Can someone tell me how can I remove the myicmp chain out of the INPUT 
chain.

Thank
hallian