[PROBLEM] Setup USB Wifi Dongle

[fosbie]

I've just installed XBian from the image file and I'm very happy that its all working nicely on my raspberry pi, but I need to get it working on wifi now, instead of ethernet. I have an edimax wifi dongle, but I don't have the first idea of where to start with setting this up and somehow I can't seem to find the info with a Google search. Can anybody help?