Copy rented HD movies to Mac

Hello. I’m totally new to hacking. Presumably I will buy and install atvflash. What I would like to be able to do is to download (rent) HD movie from Itunes store and copy it to my server Mac so I can stream it to other aTVs (I have 3 of them) within realm of the rights i.e 24 hours. I understand those movies are protected in some manner – any possibilities here? Me and my wife we usually just watch half of the film in living room and half in bed room where 2nd aTV is (usually second part of the movie is watched only by me ‘cause she usually sleeps by then). Regards. malimarek