On my Windows 8 machine I clicked on the Desktop (Metro interface) then ran this app.
calc
When I press enter, the calculator came up.
https://dl.dropboxusercontent.com/u/29864315/Screenshot%202014-10-13%2007.41.08.png
I'm guessing you know your basics of Windows shortcuts but Window 8 Metro Tiles are different. Here's a tutorial on that.
http://superuser.com/questions/641504/how-do-i-restore-the-calculator-tile-to-windows-8-start-screen
http://www.askvg.com/windows-8-start-screen-how-to-pin-unpin-resize-move-and-search-tiles/ covers how to pin a tile (put an app on the Tile screen).
Bob
Subject has disappeared it was on my computer when I purchased it.
Is there a way to locate it and reinstall, if not, is there a site I can find one?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic