I would like to create an animation figure that I can morph into an actual figure.  How do I get the scale correct for a DVD NTSC video clip? Can I place the clip under the animation somehow so I can match it up?  I just need to get the scale correct, and the sperate actual figure will be placed in later using Media Studio pro.  Help appreciated.

NTSC Standard is 720x480
If you are going to scale it up for a higher scan rate monitor/TV then
NTSC 1280x720 and
NTSC HD 1920x1080

Attached Link: http://www.renderosity.com/mod/forumpro/showthread.php?message_id=2352171&ebot_calc_page#message_2352171

import the footage into Poser as a background and set your figure scale against it remove background footage and make poser movie...

You should be able to do this in your video editor more easily than in Poser. It might require a video editor with multiple tracks in a timeline. Render out a Poser animation of your moving figure (I assume you're animating) either as a series of stills (making it easier to isolate the figure in your video editor via the alpha channel) or as a movie (you can knock out the background in your video editor using a color key matched to the Poser background). Then resize the Poser movie in your video editor to fit the background movie, which you would presumably have on a lower track in your video editor timeline. If you want the figure to slowly "appear" in your video, just keyframe the transparency of the Poser movie clip to your taste. If you want it to transition slowly from an outline figure to a full, non-transparent figure, you may have the appropriate filter in your video editor if it is good enough (Final Cut Pro or Avid Express). Alternatively, render out your Poser movie twice: once with a toon outline, and once without, then overlap the two movies as separate timeline tracks in your video editor (the background movie on a third, bottow track), and keyframe the transparency of each Poser clip (or you could use a cross-dissolve transition with both clips in the same track) to your need until you get the transition effect you want.

When i try ti import the AVI file it give me an error: "Not a valid invalid file!"
This file is a standard, small AVI clip. Anyone know what is wrong?  Thanks

Try rendering out the AVI as uncompressed (provided you have the disk space).

This could be a codec problem. There is no "standard" AVI. The AVI format is just a wrapper for compressed data formatted by a particular codec. Usually as long as you have all the needed codecs on your machine, any app can use them, but sometimes there are issues with support for particular codecs in conjunction with particular apps. Rendering uncompressed eliminates these issues.

A word about video resolutions: I've often seen NTSC DV represented as 720 X 480. However, standard definition NTSC video uses rectangular pixels, whereas most computer video uses square pixels. Depending on how your various applications handle the conversion, 640 x 480 may be the actual size you want to render at. This gives you a 4:3 aspect ratio, which is the same aspect ratio as SD NTSC video.

Your best bet is to do two short test renders at both resolutions, then run them through your entire production pipeline (Poser -> Video Editor -> Print to Tape) to see what actually works without squashing, stretching, letterboxing or clipping. Ideally, these test renders would have a series of markers across the width of the frame so you can instantly see if the ends of the 720 x 480 render are being clipped.

If you are rendering for video, don't forget your safe areas! The entire frame you render probably will not be visible when viewed on a TV. The edges of the frame may be masked off.