My advice would be to take your taxes to an H&R Block, not only will they know the answer, they guarentee it. (They pay in advance, and if they made a mistake they pay for it)
After all, its in their best interests to get you the highest return. They get paid a small % of it. (I paid about 30-40 bucks I believe, got a cheque months in advance, and still got a hundred more then I would have had I done the forms myself.)