If you are not into animation, and/or do not want to rig your character in Cinema (CBmaps are of course much better for joints than Poser's antiquated method), there isn't much difficulty though. You can follow jddog's tutorial here at R. to see how you can open a posed V3 or whatever in C4D and how you can apply the textures to it. The most important things are a/ export from poser as obj, b/ import settings for obj in Cinema multiply with some hundred and c/ change to default view. It is a bit tedious having to import and assign the textures, but it's well worth the trouble. There is a plug-in, created by Spanky, that expands obj import and export in Cinema, but that is, for the moment, only for WinPC's. otoh, now that Cinema9 is out, I personally wouldn't upgrade to 8.2 anymore. If you pose in Poser and then export, you can easily use soft selections and tweak mode to correct joints.

I have tried prudent planning long enough. From now I'll be mad. (Rumi)