Also, be sure your VM settings are adequate -- poser doesn't "wait" for windows to increase the vm, it just says screw it and locks up. So the VM has to be large enough to start with. But, absolutely, and without question: render to frames. Not only do you get to control the quality of the final film better in an editing application, but you can add in special effects and do postwork easier, too.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)