Personally I've developed a strong dislike for the flat no-shadow background look that many gallery images here have, but that's only my personal preference.  If you care to surf my gallery you can see some examples of how I like my lighting.  Generally I only use spotlights, but sometimes, very occasionally these days, I'll use a low power Infinite light to fill any very dark shadows.

Recently I've stopped using Poser completely for rendering, and am in the learning curve for Cinema 4D, because it's just so much more powerful (as one would expect, at 15 times the price).  All my gallery stuff right now though was rendered in Poser, and tends to have little or no postwork, mostly because I'm no good at postwork, but can give you some ideas about lighting.  I tend to leave some notes about how a scene is lit also, if you find that useful.

http://www.renderosity.com/mod/gallery/browse.php?user_id=472534

^^ fair amount of nudity in many of my images, fyi.

My Freebies