I have a cumulative gpa around 3.0, being dragged down by undergrad from 10 years ago. Graduated in 1998 with around a 2.25 gpa. Returned to school a couple of years ago. Science gpa is 4.0, and I'm taking the mcat in a month. Will end up getting a 2nd bachelors (biology), and should graduate with a 4.0. How strong do my mcat scores have to be to be competitive, and how much will admissions committees take into account my early undergraduate grades since they do not reflect my current performance?