LGT(Leo's Games Tools)

hello
I love the tool, I really enjoy the low poly car models from these era of games. I have a question though. When I export a model all I get are the obj file and the tga texture files. Isn't there supposed to be an mtl file as well- so modelling programs know which texture to use and how to apply it? When I import the model I don't see the texture map, its just flat shaded. I'm not so good with this stuff so forgive me if its an amateur problem.