It should be in the back of your game manual.
the buying code is in the CD case when you buy the CD. you retard
The code should be on the back of the CD case or in the manual.
The code for the installation is on the back of your CD case.
Look on the case near the bar code.
Answered By -Diptarup Sarbadhikari. The Frank Anthony Public School. Kolkata,India Key: KGJS-6HGH-IPHY-XTRI-VIUM This Is The Code .......So Play And Enjoy
on the slip of paper that's inside the case.
It should be on the back of the CD case you purchased.
The product code is the CD key, the code you use to add the game to Steam. It can typically be found printed on the game manual, or on the inside of the CD case.
It could be in either one of two places, first on the outside of the CD case or it would be on the back of the booklet that came in the CD case or box.
The Installation code is located on a sticker that is either located on your CD Jewel Case or CD Sleeve, inside the Manual, or on the Call of Duty Disk.
Its on the top of the back of the booklet in the case the CD came in
Presumably you're talking about a site where you can sell your old CD's. In which case 'Music Magpie' is one possibility. You type your bar-code, and it tells you what they think your CD is worth - See related link.