Where do i find the serial KEY on my CD CASE for Harry Potter Goblet of Fire I DO not want any serial code generators or free serial numbers just the location of the serial key on my CD case

You are properly looking in the wrong place, most of the time it is on the booklet (back of booklet)

If you have lost the booklet, i can only suggest a serial code, it is not illegal if you already brought the product, the law says as long as its for personal use, then your fine.