Henry Ham's kit is more of a character template than a kit.
You will need to download other software in order to use it effectively. Basically, he provides you with some building blocks, like basic meshes. I suggested he consider including a brief tutorial on how to use his templates.
In any event, you should probably download a program like fragmotion (which is nagware, but costs nothing to try) to work with.
From there you can import one of Henry Ham's model templates and begin to reshape it to something you can use or want. A good idea for starting would be to cut off the default models hands, merge the new hands onto the model. Cutting the model in half and reverse mirror saving and merging, followed by a weld, work well enough. (In fact, cutting the model in half is the most effective way to reshape).
Also, you need to learn how to uv map just enough to begin making your own textures for your models. I followed [href=
these instructions.]this guide[/href].
You should probably download gimp for fine tuning your textures.