I am going to interject on the render setting window.  Paganeagle has excellently described the quick way to improve your renders by using the slider method.  However, this is not exactly where you want to be; these are automatic settings which have no control over the individual features for final tweaking.  You should switch to Manual settings.  There are more flexible controls which can lower your render time without sacrificing quality; in some cases, they may eliminate unwanted artifacts. 

This window is the preferred state that most experienced users would like to see when helping new Poser Users.