This is my first script, so its a bit dodgy but hopfully sombody will get something out of it.
Instrustions:
Extract the zip file.
Open up Zbrush. Turn off show actions & notes in the "Zscript" menu
Click play in the Zscript View
Once the Import window comes up, open the "box.obj" file which is included in the zip file.
Hopfully its smooth sailing from there.