I have completed my studies from India, how could I take admission in medical school in USA.?

I have completed masters of science in chemistry. In India we have 3 years bachelor degree and 2 yrs masters degree, In my bachelor I studied biology and Chemistry and in Masters I studied Chemistry with Organic chemistry as a major. I performed very well in my studies. I am a permanent resident of USA and living in Houston, Texas. I want to take my admission in Medical school here. What I need to do for that.?? I appeared in Toefl and scored 102 out of 120 in Toefl IBT test...Please help.