To make a cube in PremElements you import a cube template and go to the Corner Poiint F/X and pick edit to edit the corners of the film strip that you want to align with the corners of each square.
Then only way I know how to do this in Vegas 8Pro is to use the X Y Z setting in the Event/Pan Crop tool box. But this seems to take a longgg time to do for each square. Is there a easier method to do this in Vegas 8 Pro?