The jist of it is (and I have to give credit to both Natural Pose and Susanna by watching how those programs did it, although Natural Pose uses the .pz3 file while Suzanna autmates what I've figured out) You create your animation in Poser using 1 or more characters props etc then export that out as .obj sequence. Now in Bryce we won't be rendering the whole animation at once but more like stop motion (frame by frame), you'll need Poser Bryce and some program to put the .bmp sequence together as a movie. Create the Bryce scene and even animate other objects (make sure your frame rates match in Poser and Bryce). The more stuff you import from Poser the more stuff you have to keep track of. Then set your scrubber for frame 0, import your object file that matches frame 0 from poser and select render animation, set render options to .bmp sequence and render only frame 0 (not the whole animation). When that finishes delete your imported object from poser and advanced the scrubber to frame 1, import object frame 1 and so on until your whole animation is complete. Theres more details on placement, materials etc. But that's the basis of it. You'll need quite a bit of hard drive space for all the objects (this is where Natural Pose is a benefit, it creates small files that it uses).