Hi there,
I will disagree with you on the statement that no one sits you down and tells you what is expected of you if you are applying for surgery or any other specialty. At my medical school and many others, we started out with a clinical preceptor (our choice of specialties) during the first semester of the first year. You have plenty of opportunity to ask quesitons and find out what is required of any specialty. All you have to do is ask.
If you do well, you can enter any specialty so do well in your coursework and on your board exams. DUH...! If someone tells you that you you need to have such and such a score in order to do such and such specialty, then that becomes your shooting level. Don't limit yourself! We were told from the outset to shoot for the moon and hit the stars. If you do well, you can determine your own fate. If you do not do well, you may be at someone else's mercy so DO well in school no matter what specialty you want to enter. DUH...!
I would suggest that you contact your chairman of surgery as soon as possible and let him or her know of your interest in surgery. The next thing to do is join the surgical interest group at your medical school. At my school, we made sure that we mentored those who came behind us with suturing workshops and plenty of meetings with surgeons in the community and in academia. We also pooled our residency interview information and gave coaching for USMLE and shelf exams during third year.
A useful website for you would be the American College of Surgeons. There is a handbook on that site that you may download for more specific information. You may also want to touch base with some of the surgical residents at your school as to the programs that they applied to so that you can better get an idea of whats involved with making yourself very competitive.
Finally, since you know so little about surgery and surgical residency, you may change your mind about this as you learn more. Most of the folks in my class did just that. Good luck and ask some questions! The earlier the better!
njbmd