6
by aldo
The Blessed One
Ok... brief as I can be, cos I'm at work;
FS2 stores information in tbl files; for example, ships.tbl lists the details of every ship in the game (name, model, hitpoints, speed, whether the player can fly it, etc). You need to add a new entry in this (unless the mod comes with its own table file)
The actual ship models - what you see on screen - are saved in .pof files. Also, the textures for the ship are pcx files. You need to either put these files in the data directory, or data/maps (for textures) and data/models (ships).
Finally, you often have VP files; VP files basically store a bunch of other files in one handy package (a wee bit like a zip file, but uncompressed). In order to edit tbl files - or any other existing game data - you need to extract it from the VP file. VPView is the program that does that.
Hope that helps out.