Download Windows Double Explorer
Windows Double Explorer is a free Windows-7 application, that manages two or more Windows Explorer panes in a single window.
It will let you add your favorite folders with drag and drop to the toolbar for quick access, providing an environment that many people will fine convenient, a kind of Norton Commander or Total Commander. It will also let you use tabbed folders.
Contrary to the Windows Explorer, Double Explorer loses focus, so that, for example, if you delete a file you can not continue with the keyboard selecting more files, you are obliged to use the mouse.
If you are a mouse person, go on and try it, you may find it useful, otherwise, don’t bother.