Just a little add:
You can't use any models from any game on any other game/application, you can, however, edit the models and re-add them on the SAME game.
Model ripping is really iligal, wich can get a really bad fine, or, 3-6months of jail, in the worst cases of course (ohh yeah, your computer will be suspended also).
Of course, most of the companies, won't harrase much, if you rip the models so you can take pics/make backgrounds, etc. but others, will be really jumpy (lukas for exemple).
In case you have modeling experience, you could try to make copies of the models, but watch it, in some companies, they have copywrited their work, wich means they can go berserk on you if you tried to copy a model (exemple: lukas, yeah, again, you ever heard of the sw mod for ut2k3/4? and the 1 for hl2? this last one i'm pretty shure you never heard of it, just like the one for q3, since they all got closed in the early stages, since lukas find out, and didn't accept the mods).
It doesn't matter if the final product is going to be free or commercial, if any owner of the models finds out, they have the right to take to court the makers of the application/game.
This goes the same for textures, sounds and code.
<<<<<<<<<<<<<>>>>>>>>>>>>>>
There are thousands of sites out there wich have free models/textures, all they ask is that their name stays on the credits.
In most cases, you can evan get high poly models, takes lot's of pics/make movies with them/etc., and then transform them into low-poly models, so they work on your game smoothly.
And about textures/sound sites, let as just say: billions
My love is seperated in 2 parts, 1 of them is 3ds Max 7, the other; FPSC.
