Before you can configure your dsl connection, you need to configure your networkcard first.
Do the networkcard configuration and choose not to use dhcp.
Assign and ip:
ex:
address :192.168.0.2
netmask :255.255.255.0
network :192.168.0.0
broadcast :192.168.0.255
gateway :leave this blank
dns : what the isp assign to you; if don't know...you can use windows and run ipconfig /all....you'll see the dns at the bottom of the print out.

Then run adsl/pppoe configuration (if your isp use pppoe, some isp use pppoa)