I want to uninstall built-in Skype app in Windows 8.1 as guided here.

The problem is I have no access to the [`metro screen`](https://www.google.com.vn/search?q=windows%208.1%20metro%20screen&newwindow=1&espv=2&tbm=isch&tbo=u&source=univ&sa=X&ei=iFfsU8aRGMXp8AW934CIBQ&ved=0CBkQsAQ&biw=1536&bih=713) of Windows 8.1 after I installed Classic Start Menu.

How can I open Windows 8 metro screen after installing [Classic Start Menu](http://www.classicshell.net/)?