retake courses?

I feel your pain. My freshman year was horrible as well. I finished out my year with a 1.99 GPA. I did re-take some science courses that I had bombed in to re-learn the material better. However, I suggest that you not only re-take them but take other higher level science courses and kick butt in them. I talked to one admissions officer and he reccomended this strategy. Plus, if you didn't do well in your lower level science courses, how would they expect you to have a solid foundation to succeed in the higher level courses. Just don't make a habit of repeating all science courses unless you have extenuating circumstances.