The most important thing is not where you went to college but how well you did at the college you attended.
Here are some tips that will be helpful:
Some admissions committees favor elite universities. However the most important thing is good grades and a high MCAT
Pick a school that is a good fit for you so you don't mind devoting a majority of your hours to studying. You will need to get good grades in college in order to apply for medical school. At the medical school I attended, the average GPA is reported to be 3.85, so even one or two B's can hurt your chances of acceptance.