I found when I was updating our web site I would run a VB script to open three Explorer windows. I have chosen to use Q-Dir to replace the script since it actually does a better job with screen real estate and allows me to open four windows. I use the the portable version to avoid installation headaches.
Sometimes when looking through a file manager, it would be nice to have more than a dual-pane view. Now you can manage your files with up to four viewing panes at once with Q-Dir.
Note: Q-Dir is available in regular install and portable versions.