I started on the PS2 many years ago, and moved to the Xbox 360. I also have this game on PC, against my direst for the none sale of the SoA for PS2 outside of Japan. I purchased 1 Xbox 360 copy, and 1 PC copy of SoA (as I have 2 accounts.) Each and everytime, I purchased and added a content code, all I needed to do was install the CD's files on the new platform. So when I got my 2nd xbox, I installed the SoA content from the CD I had and the new xbox had the content readied to be used after the updates. So if you purchase the Content ID for the PC, you only need to find the CD for the 360, it doesn't have to be new.