Hi Gaston, in addition to print screen as Phil mentioned, there is also a way to create a screen capture at a higher resolution, there are some details on that here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=1049.5

To get more control over printing you would need to export your data to another CAD program and print from there - Rhino works well for this.

In version 1.0 MoI is focused only on creating the 3D model data and not on printing yet.

- Michael