When installing Window 7 you get an option to choose your language, timescale and currency. This then installs a set of Windows themes and wallpapers preset for the language you chose.
What you may not know is that you can find on your PC how to install the other wallpapers and themes that don’t come with the set you chose.
I am going to show you the way to install these so you can enjoy the most out of Windows 7 themes and wallpapers.

1. Click Start menu, in the search bar type  C:\Windows\Globalization\MCT.

2. You will be shown a list of subfolders which will open up in Windows Explorer. In each folder there will be a set of different wallpapers for each different Country. For example, MCT-AU would be Australia MCT-CA would be for Canada and so on. Choose the Country of the themes you would like to use, go into the folder, select a them you would like and double click.

3. This should now have installed a shortcut for the selected theme in the Personalization section of Control Panel and can be used in the same way you use your other themes, by right clicking the desktop and clicking personalize and choosing the theme of your choice.
Enjoy!