DivX and CinemaNow are giving away Free Digital Copies of the movie Terminator Salavtion! Just enter in code TS201023. Login or register a CinemaNow Account. Then, download a DivX player, if you don’t have one.
If you already have a program on your computer that will play digital DVDs, then you shouldn’t have to download the DivX player.
I haven’t tried this one myself yet. But, DivX and CinemaNow are both pretty big companies, so you shouldn’t have any problems.