Sandmarine, Cinema 4D is a bit intimidating at first, but once you get the hang of it, it's pretty cool. If I can suggest, a really good way to jumpstart working with it would be going to www.lynda.com, which has online video training for C4D v 9.5 and v10 (it also has training for Poser 7). If you can spare another $25 after getting C4D, you can get a month's access, which should be plenty of time to view the videos. I've used them, and have found them very clear and instructive.

Kuroyume's plugin is commercial--$150 (I guess there's no free lunch!) but it's a very good and very stable plugin, and the creator is constantly upgrading its capabilities. It's still missing a few elements, like IK and Point At (both of which I use a lot) but he is working on them and should have them soon.

Good luck!--Tim