Use PayScroll Salary to find out what others are getting paid for. Enter the negotiation with more information like this is going to help you in your negotiation.

If your are a fresh graduate out of school, ask around your peers. Most fresh graduates are usually more than happy to share such information.

I would say do some research first before going into negotiations with the employer. Then attempt to make them say what the salary range is for the position. If they don't then you have to consider what your walkaway magic number is. Then make your best guess and come up with a guesstimate number. Also consider the other perks that come with this job and also opportunities for pay raises. I am a person who sees big picture, but I won't settle for less as well.