As a point of note, if you run Poser 5 on more than one system using the same serial number at the same time, you are violating the EULA for the software, and therefore using it illegally.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)