PPoE is ok for the dsl modem, if so indicated by the instructions. I would reset the wrt54g router. I do not believe that the home network requires exotic settings. Each computer should be able to access the wrt54g router (assumes each computer is configured to accept auto assignment of IP address).
 I stumbled upon this tidbit
. It shows setting up a broadband connection with login/password.
For a church, once the login & password were established from the dsl modem, a router was inserted into the local network. In this configuration, client computers regard this as a LAN internet connection served from the router. When this connection fails in the future, I will need to consider making this accomodation to work directly with the broadband.
Edited by rf6647, 06 April 2008 - 05:50 PM.