My usual method is the same as EnglishBob's, the colour of the keyframes should make no difference (they indicate the 3 spline or tween types) The only other reason they might change is when they are selected, I've said before I can't remember P7's interface too well, in later versions selected keys are highlighted by a white square.

Here's an alternative method though.

First save your scene under a new name.

Download and install LesBentley's free MinFig

http://www.renderosity.com/mod/freestuff/?item_id=55533

This is an invisible "null" figure, load it into your scene and do absolutely nothing to it. Poser can't save poses for props or multiple figures, but parenting all to the null, they become it's "body parts" and so their poses are saved in one file.

In the hierarchy editor parent all figures and props to MinFig's body, do not change the parent of conformed clothing though or parented props, just the figures they are conformed to. Do not include Lights or Cameras. save them as poses in their respective libraries.

In the animation palette go to the last frame, click in the topmost keyframe and drag all the way to the bottom to highlight the keyframes for everything in the scene, click + to create keyframes.

Still at the last keyframe select but do not alter MinFig, save that frame to your library as a single frame, select "Morph Channel" if your figures have morphs, leave Body transformation unchecked.

Delte all frames/frame count of 1, select MinFig and apply the pose you just saved and you should be good to go