FF11 is differnt then other PC games. Once you regisiter the expanions codes they are on your account not your PC. I have used my retail disc on 4 differnt PCs and laptops. Also if you can log into your account on you laptop then you can delete and reinstall. One other thing is everone got the add-on data and you will get it when you do the fist update. The add-on codes just lets you have access to them.