I graduated with a Graphic Design major. In order to be successful, you must have basic knowledge of computers, particularly Macs. The pros of the major are that it is limited only to your creativity. You will do well as long as you are inspired and creative. The cons are that most jobs often don't pay spectacular money.
I was a dual major: graphic design/photography. I would have concentrated fully on photography if I had known how much I loved it...I only discovered my affinity for photography halfway through my education.