In windows 7 Taskbar instance of an application can easily be created by using Win + NumberKey. here number key signifies the position of the Application in the Taskbar.
If you press Windows + 1, it will create a new instance of the first icon in the task bar. In the taskbar Shown here it will open an instance of Internet Explorer while Win+5 opens Windows media Player, Win+7 to Windows Live writer ad so on.
Now that’s when i wish there must be Double digit Keys as well in Keyboard.