Possible Duplicate:
Do I need to buy multiple games to be able to play Diablo 3 with my wife?
Do I need to own Diablo III to download and install the game?
My brother bought the disk version of Diablo 3 and dowloaded the game and can play online with all features it comes with. I made my own battlenet account so I can play on the same computer the disk dowloaded on but it asks to upgrade to full version of Diablo 3. Do I have to pay 60 bucks then dowload it again when its already downloaded by disk? Or just paying 60 bucks give me clearance to play online with all features it comes with as if buying and downloading Diablo 3 for the first time? Me and my brother are using the same computer to play Diablo 3.