newbie question

Hi Folks:

My hobby is large scale outdoor model railroading. Over the past year I spent an incredible amount of time sculpting clay people for the insides of my passenger cars. At ten people per car this takes a while. I thought perhaps I could use a software program like Make Human to create the passengers then print them out. Of course given this technology I could sell them as well.

So the question. Make Human outputs a MHX file. Upon further investigation I find I may have to use a program called Blender. I don't know what it outputs. So can i just hit print in either of these two programs and presto I have a 3d figure or what?

As you can see I am not afraid to ask the dumb questions.