Really stupid question, where are the editors?

Hi I've just downloaded the Mac version of Torque, and I'm having some problems. I just can't find where the editors are. I've followed the tutorials, but they just jump into "load the GUI editor...", however I can't find the GUI editor at all in my SDK folder.

It pains me to ask since I don't see myself as a computer novice, but any help is more than appriciated.