Hello,
Thank you for your answer.
I tried a lot of configurations, first of all i configure the WRT54G to get internet connection through my VDSL gateway. (with this procedure: http://www.dd-wrt.co…ss_Access_Point )
It's working, there is internet connection on LAN et WiFi.
But when i start to configure this step:

I have no IP adress delivered in WiFi. It is exactly the same with the router setup command option.
(But with LAN connection internet is always working fine)
When i change settings to get a local IP adress, the internet connection is fully open through WiFi.
Is it possible to configure the WRT54G as an AP only with this hotspot system ??
I updated the WRT with this firmware: DD-WRT v24-sp2 (08/07/10) std
And tried the other configuration.. but didn't work either.
Best regards