iptables accounting problem

Hello netfilter list,
I'm sorry for asking this question, I red all the documentation and still got no clue how to make ip accounting work. I got a pc with 2 ethernet cards all traffics goes through it. i created a rule like
iptables -N xxx.xxx.xxx.xxx
iptables -A input -d xxx.xxx.xxx.xxx -j xxx.xxx.xxx.xxx when i type
iptables -L xxx.xxx.xxx.xxx -n -v
i get 0 traffic information. How could be? Or whereis my mistake?

Best regards,
 ITM                          mailto:[email protected]