Get it the way you want and save it as a preset. That way, all it takes is a few keystrokes to get you back to where you want to be.
From the Vegas online help (search for window layouts):
Press Ctrl+Alt+D, release the keys, and then press a number on your keyboard (not the numeric keypad) to save the layout in that space.
To load a layout quickly, press Alt+D, release the keys, and then press a number on your keyboard (not the numeric keypad) to recall the layout saved in that in that space. If no layout is saved in that space, nothing will happen when you press the shortcut.