For those users which have Nvidia Graphics Card, can have multiple options like more deskops, Nview properties,zooming,different effects while dragging and dropping windows and many more. The nView features are by default disable you need to enable them.
Go to Control Panel,open Nvidia Nview Deskop Manager. Click on enable.
Now you will have an extra menu when right clicking on windows on the taskbar. You can send it to another deskop, set it on top or change transparency.
But to have multiple deskops go to Desktops tab and then Add any other desktop.
You can have zooming and other windows effects by configuring other options