*Very good MCAT scores (Medical School Admittance Test) Usually a 30 is considered a good score.

*Some sort of work in the medical field (volunteer work, part-time EMT, that sort of thing) This lets them know that you have been exposed to the health professions and know what they are all about

Find out more about the MCAT here- http://www.princetonreview.com/medical/testprep/testprep.asp?TPRPAGE=12&TYPE=MCAT-ABOUT

Find out more about becoming a pre-med student here:

http://www.princetonreview.com/college/research/articles/prepare/hsPathMed.asp

try visiting these websites:

how becoming a doctor works

http://www.howstuffworks.com/becoming-a-…

how you become a medical doctor

http://www.drtracey.net/becomingmd.html…

Becoming an MD (site of the American Medical Association)

http://www.ama-assn.org/ama/pub/category…

Doctor of Medicine: Steps to Become a Medical Doctor

http://education-portal.com/articles/doc…

Hope this helps get you started. Best wishes in your endeavors.