I would really recommend instead of making a total conversion for Final Fantasy VII, try making a mod for something else first. Also, get used to an art tool. Blender is good, and it is free, though the UI makes no sense until you read a guide. The problem is that you could attach Halo models to the main characters, but you would have to make them have the same number of bones with the same names (which isn't that hard, actually). Then you'd need to attach the animations to that character. However, I don't know how to get the animations from the cloud character. In other words, this might be impossible (at least, in my knowledge). But, who knows, I may be wrong. I know you are just trying to get icons done right now, but, in reality, your main goal is to do what I am talking about, right?
