I just acquired an Xbox 360 slim a few days ago and I'm looking to play ISO's with a 128GB USB Flash drive. I have never had and XBox before so all this is new to me. What steps do I need to follow to be able to play some games with a flash drive? I really don't want to open this system up unless I have no choice. Is this possible? I'm not concerned about playing online and I don't have an Xbox Live account.