I currently have a score around the 650 range, and just got a new car on finance - so that will definitely help my credit.
Another thing I was considering was applying for a credit card and using it to pay the monthly bills (cable, electric, etc.), and paying the card off. Currently I make the monthlies with no problem, so I foresee no problem using a card to make a payment then paying the card the same way I would pay the bill if I weren't using the card. Would that be a good way to increase my score?