Hi NightCabbage,

Yes, you probably have to learn a bit Modo shading system as you question looks more modo related.
Maybe an quick view on luxology.tv could help to give you a good start

http://www.luxology.com/tv/training/view.aspx?id=280

Also have a look to the Related Videos in the bottom of this page :

Shader Tree Essentials Intro
Poly Masks
Item Masks

...


btw dont hesistate to create an account on the luxology forum, people are (often) really nice, and
you will have fast replies to your problems.