ADSL+wifi router & PPPoE

An interesting question: We have a D-Link modem, which doubles as a router with built-in Wi-Fi. Specifically, the model 2600 (glamorous, white, belongs to a friend of mine). Well, we don’t have it yet, but there’s an intention to buy one. This modem comes with an ADSL port through which it can dial the ISP via PPP, an Ethernet port, and a Wi-Fi antenna to distribute the connection from the ISP to the end user. And we have an ISP — a local network that provides internet over Ethernet, with a PPPoE connection. That is: username, password, kind of like dial-up, the whole deal. The question is: will this modem be able to establish a PPPoE connection not through the ADSL port, but by dialing through the Ethernet port, and then distribute the internet around the apartment over Wi-Fi?