Poser isn't cheap and you'd get sued for using their models for profit anyway. Poser is best for - well poses. You import your rigged characters into Poser and pose them. Poser also has a nice renderer too. But the program is really steered towards animation.
"The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man."
George Bernard Shaw - Man and Superman