nevermind I found it here: http://wiki.mcneel.com/developer/scriptsamples/boxframe
love this script
Its also available here, along with all of the other samples:
hmmm hmmm- remind me what it does??
I'll attach the one I found in my pile of scripts-
To use the script, extract and save the .rvb file from the attached zip archive, then drag and drop the saved rvb over an open Rhino V4 or v5 window. This will load the script, set it up to load on startup in the future and register an alias
that will run the script much like a regular command. The alias can be typed or added to a toolbar button or keyboard shortcut (F-key).