Hey Peter, what exactly do you consider an interface? If you mean a GUI (graphical user interface, point and click with the mouse) you are right, because there isn't any. the aircrack suite is text only.
Could you post the output of the commands, as well as the output from "iwconfig -a"?
I have a feeling this thread will be moved to the beginners forum soon, so if you can't find your post, that's where it went.