I agree with Fjorn, dont load creatine and especially dont look to it for a boost when your foundation isn't let. I think creatine can help and I personally take it, one of the few supplements I take because its so cheap you may as well take it.
But without a solid diet, routine/rest schedule you'll just be dumping money down the drain..
If you're serious about it go through yoru kitchen and toss everything that is there just because it tastes good. Sweets, snacks, sauces that have a lot of calories (mayo) and stuff that you really can do without just chuck it. Fill all that space with some good food, lots of veggies, some good fish, steak, chicken, and get a good healthy cooking cook book.
To make gains muscle wise you need to eat more. and to eat more without fat accumulation you need to cut out the "bad" foods as much as humanly possible and you need to train HARD.
Hope this helps.