Hi This sounds like a Win98 memory problem. Are you actually sure Poser is hung up or just moving at a snail's pace? The other people have hit on the most common problems. Here's something you might try... reduce the resolution of your texture files and cut down the number of shadow casting lights. I did an animation with Poser that had 14 characters in a full setting with a bunch of lights and I was never able to render the thing when I was running Win98. I upgraded to XP and was able to render the thing, but it took 21 hours to render 125 frames at 640x480. That's when I'm glad I have another machine to work with when it takes this long to render something. Ed