I've been searching through some tutorials now and have a question. I've made an animation in Bryce4 and another in Poser4 Is it possible to put the two animations together(Having the poser character moving in a moving bryce environnement)?

In Poser you can import a movie file (such as an .AVI you rendered from Bryce) and use it as the background image in your poser scene. If you match the camera angle and movements well and get the lighting right, your render out of Poser can look really good.