Twillight Render works with the Plugins animation of Sketchup! 😉
You can also use something like the free BBFlashback express for recording the animation on the screen 😉
you can also export your animation as simple images (25 images/ second) then make the animation inside Blender for example 😄
http://www.3dsaloon.fr/phpbb3/download/file.php?id=4211&t=1