Maybe I'm mistaken, but I thought you were going for in-game cutscenes, which milkshape would be fine for.
It doesn't have renderer, so it's not good for making cutscenes with the story zone, if that's what your after.
I'm not trying to be elitist or insult you, incidentally, it's just learning 3d is a mssive undertaking, and milkshape is a no frills program that does what it does simply and without clutter, which is why I recommended it.
Milkshape costs 25 bucks, I think.
There's always Blender, but I needed to buy Fragmotion to make it work with FPSC (FM is another program worth considering, for the same reasons as milkshape).
But like I said, if you're going to use one of the big boys, be prepared to work hard trying to learn it.
instinct is more valuable than intelligence.....