In my experience, POSER always introduces a Character or Prop at frame 1. Maybe Poser 5 will address this. Until then, you can get a similar effect by introducing the character at frame and scaling it to 0%. Set the next key frame to 15 and scale the character up to 100 %. Use frame interpolation options to ensure that the character doesn't "Grow " between frame 1 and 15. Hope this works..