Hello guys!

I am having a problem sharing my PPOe connection via wifi. I managed to connect only with wep 40-128 bit key (seems that nothing else works). But, each time when wifi is turned on , I can only connect to my newly created connection from my Nokia n900, and other computers with windows are unable connect . After my n900 is connected, other devices can do it too.
Can you please help me with this problem ? How to reconfigure wifi to make it work properly ?
Thank you.
P.S I use ubuntu maverick.