Last night I partitioned my external harddrive (500 gig drive). I figured 350 gig for time machine backups, and the rest for movies (150 ish). That's as far as I got, I'm new to streaming video from my imac to atv2. What I would like to do is handbreak movies to the external drive and be able to stream them to atv2. What is the correct way to do this and what do I need to setup in advance so when my kids what to see their movies, it's easy for them to find them on atv? Thanks.