I would strongly recommend not to get DIVX 5.0. It seems to be very unstable. And, when installing, if you have any illegal codecs, it corrupts them. I've noticed that when watching movies that are compressed using certain methods, you can see the actual separations in the layering in the movie, which makes it really hard to pay attention to the movie and not the flickering. I uninstalled 5 and put in 4 again. I couldnt be happier.