If you want Poser, Content Paradise is selling Poser5 for 19.99 USD. You can do almost everything with it that Poser6 does.

http://www.contentparadise.com/us/user/poser_5_english_full_version_product_22249

I use Poser and I always save as a TIFF and convert to a JPEG in my 2D program. I think it makes for a cleaner render.

What are your render settings at? That could be part of your problem.She does look a bit rough.