Thanks.
I tried exporting from Vegas using square pixels several times and failed. Whenever I would export a TGA sequence of my particles, it would not line up correctly.
Finally, this morning I figured out the issue. PI is operating in a WYSIWG manner. The visible portion of the “stage” was clipped and therefore clipping the images I was creating(I had noticed theat the images created were not 720×480, even though my stage was). I dragged all the tool windows to make my visible image large than the 720×480 and all was good. I didn’t have time to see if things worked OK without exporting my widescreen avi as square pixels. I’m thinging it will work out.
Kurt