Whatever program you use, even Pinnacle, to avoid artifacts, use the least amount of compression you can get away with. If your computer can play it back smoothly and it looks acceptable, you've found the settings that are good for you. If you're playing it back on a DVD, then use the settings that will work best for it. Many programs, like Pinnacle Studio, have pre-sets that are ready made for that. Do a couple of test runs using enough frames for a few seconds of play time just to see if things look good and frames are playing smoothly. If you get a strobe effect, next time use motion blur when rendering. At this point, you just need a program that will put all the frames together and render out a movie file in the fromat that will work for your needs. If you didn't change the frame rate, Poser defaults to 30fps.