Iptables Problem please help!

[Trax]

Hello,

I have a problem. I will make a accesspoint with the xbian. I will connect with the iPad over WLAN to the xbian. This is no problem. I habe make the Settings in the Interface. Have Install hastapd And isc-dhcp-Server And config it. I can connect to the xbian over WLAN with the iPad.

But now i will become the Internet Connection on the eht0 to the WLAN devices.

But wenn i make : iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

It's Not work. Can any Guy help me . Sorry My english is very very bad...