Look the first article
http://www.onnovanbraam.com/index.php?tutorials/
It's can be the same in Moi (more easy of course)
Just Menu View / Image /add...in each view Front Top etc...
so you obtain all images in the 3D view in the same time!
And after juste modelize over these helpers images!
You can go back in the Menu View for hide or not some images or change properties

you have a lot of tutorial here http://www.rhino3d.com/tutorials.htm
(advantages you can reload the 3Dm files format in Moi !