Script Download: ChangeDefaultInstallation.zip
http://gallery.technet.microsoft.com/scriptcenter/Change-Windows-Store-apps-465af642
The script shows how to change Windows Store apps default installation location in Windows 8.
As we all know, Windows Store apps default installation location is in driver C. But sometimes the driver C may be full, if we still want to install some big app and that seems impossible. So I think we can change the default Installation Location to ignore this problem.
You can find more All-In-One Script Framework script samples at http://aka.ms/onescriptingallery