Animated jitter

I use Sketchup for my 3d models. This a popular 3d modeling software package. This software doesn't create photorealistic 3d models, but a more cartoon like model.
I create an animation of the model into 720x576 format (compression type: video and best quality) then import into fcp 5.
The problem, once rendered into a pal format is a very restless movie, where lines become very jittery everywhere.
Would anyone have any idea about what to do to stabilize lines?
I am also rather new using fcp, so your kind advice is appreciated.
Filip K.

OK I would like to give this tread a new lease of life as over the last 2 days I have been doing a lot of experimenting.
Can't believe how far back I had to dig to find this post. this sure is a healthy forum.
After a rather disappointing response from the SU support guys I just went on to try out as many compression settings in SU export to get as clear a picture in the fcp viewer window. At last I found it with a Sorenson 3, 720x480 25fps setting. A really nice clear picture with smooth lines not broken up or jittery at all.
But the moment I dragged it over to the canvas it becomes a lot more fussy with lines not really broken up, but at the same time not a smooth as they were in the canvas window, generally a degenerated version of the viewer window.
So here is my question:
Do I have the wrong set-up in fcp?
What happens between the viewer and the canvas?
What is it I don't understand about this process?
I know I am getting old (56), but I pride myself on a healthy mind.
Anyway anyone out there who could set an old **** straight?
Filip K.

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    ==================
    http://www.projectseven.com/go
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