Bought a used xbox 360 arcade. I know what you're gonna say - arcade sucks - well yeah I'm on a budget and I don't have internet at home so a hard drive didn't make sense ... yet. I'll buy a used hard drive later. anyway, the questions: 1. How am I supposed to know when the controller batteries need to be changed? I'm using alkaline batteries now but can anything bad happen if I use nickel rechargeables? 2. Copy disc games to hard drive? Hold on now I could be renting games and copying them? 3. If/when I buy a used hard drive what software is supposed to be on it? I don't want to accidentally erase something that's supposed to be there. 4. What do you think is a fair price on a 60/120 gig drive? Thank you.