Yes, that way should work fine, if it fits into your workflow. We render all our thumbnails...it makes the process of creating both RSR and PNG thumbnails a bit easier for us...so letting Poser generate them doesn't work for us, but your method would be very handy if you can use it. Like you said, the quality difference in the thumbnail is very small. Since I'm rendering the thumbnails anyway, what I do is rather than making the characters gray in the render, I pre-make a gray Vicky and a gray Michael and store them in the characters library. (That's where the utility is handy.) Then I just bring one gray and one non-gray character into the scene, and put the poses on them. So, depending on how you make your thumbnails, this utility could be handy, or it could be useless. The important thing, though, is making one of the characters in your thumbnail gray (or semi-transparent, like maclean does), however you do it. Pose thumbnails that just show what one character is doing are very confusing sometimes.