wireless and ppoe dialup adsl modem

i have a huwaei mt 880 adsl modem and a wireless dlink ap with wan and 4 port switch

adsl modem is connected to lan ports not wan ports and the adsl modem is in bridge mode

now the internet is dialled from wan mini port from win xp and the internet gets connected in the wired computer
while in wireless if i want to do the same the laptop does starts the dialling but i think so the wireless does not translate it to the adsl modem which is in bridge mode

not an option is wan i can do it thru wan its easy
no i dont want it to auto connect and i can use the dns

i just want to know how i can dial my adsl modem thru wireless
i mean what ports are required to be opened