no worries. Firstly it sounds like you need to get the True View plugin for TS. You gotta set up the object hierchy.
I'm pretty sure PCS wont display models with out textures, even if you've assigned the objects a "material" color. Otherwise they just show up black.
As far as adding a light, i forget how to do it but it's simple.
Read over this guide by IP Andrews. It'll tell you what you need to know about getting a model from TS into PCS. Its written for ts 3.x but the tools are the same (just might have a different location/icon).
http://underworld.fortunecity.com/pacman/106/fs2mods/shipcreationguide/I think the guide also has a link to the trueview plugin. it does work with 7.6
If this is your first time really doing this, what I would do to learn what you're doing, make a simple object, like a box, create a 2nd box and stick em close to each other and make one a child to the other. Create a generic texture with your favorite texturing program (or even use one that you already have from another model), assign that texture in TS, save as cob and open it with pcs.
The guide will tell you all that you need to know to make it happen. There may be some interface quirks with TS that will cause you to have some questions but thats not a problem =) It just takes time to learn it