Help !!

[Hannah Josephine Dippe]

Hello to you all,
 
I set up my old ThinkPad i1200 with ubuntu 8.04 lts. 
 
For networking I used a D-Link W-Lan-PC-Card witch is installed
by ubuntu properly. I can ping all devices in my network.
 
At last, I tried to bring up a connection to the internet over
PPPOE. This task failed, because the assistent didn't find
an usable Ethernetmodem.
 
The PC-card is active as <eth0>, but unknown as interface??
 
Is there anybody out there to solve my problem??
 
 
Thanks for help !!!!!!!!!!!!!!!!!
 
 
hannah josephine dippe