If you cannot move the corners properly.
Try pressing escape so the vpt screen go's full screen on the secondairy monitor.

Download the calibration image here:
http://www.mediafire.com/i/?tp6haz6z6vp9wol

Tutorial made by Pieter.
Video mapping with VPT
VPT is freeware and can be downloaded here: http://hcgilje.wordpress.com/resources/video-projection-tools/