Network problem with PPPoE-connection

[Yhdiste]

Problem: Xbian cannot connect to the Internet.

Basic info:

Code:

XBMC version: XBMC 12.0-RC1 Git:2012212-afbae11 (Compiled Dec 13 2012).
Overclocked/Turbo: No.
Power Supply Rating: 5.0V,  1A
USB connections: 0
Network: LAN
SD card: SanDisk Extreme 4GB (30MB/s) - Class 10

Additional info:
I have a PPPoE-connection, whichh requires username and password. I cannot seem to find a place where I could do this on the Xbian.

Contents of /etc/network/interfaces:

Code:

auto lo

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
wireless-power off
iface default inet dhcp

Other:
I had the same problem on the "Raspbian wheezy", which I solved by installing "pppoeconf" from a USB-stick. However, I cannot install it for Xbian because of dependency errors such as:

Code:

pppoeconf : Depends: gettext-base (>= 0.13) but it is not installable

The solution:
A network-manager software, which supports PPPoE-connections (is there any?)

Would I get it working by installing ppoeconf on the "wheezy" and copying the contents of "/etc/network/interfaces"-file to the Xbian's file? Or it doesn't really work like that?

Any help is greatly appreciated.

PS: I have tried xbian-config, but it only has two options for LAN and neither one of them "works" for my issue.