How can I change the order of extended displays?

I have a laptop with external monitor, with option: "Extend these displays". I have my laptop on the left, physically. Therefore I would like to drag windows from big monitor to the left. However, in "Multiple display settings" my laptop screen appears on the right side. How can I change the order so, that my laptop screen would be first?

UPDATE: OS: Windows 7

Right click your desktop and select Screen resolution.

Drag the screen images to the position you want (the images with numbers on them) and then click Apply.

You can click and drag and drop the monitors in the display settings screen.

Here is a quick video showing how to do it