MERTOC,
Some schools will take you without having completed a BS degree. I would look at the schools that you are thinking of applying to and see if they require a bachelors degree. If you have all the prereqs, 8 hours english/lit, 8 hours Bio with labs, organic with lab, physics with lab, humanities, etc., then you would be ok to apply. I have seen very few people get accepted without having completed their bachelors. It is rare, but possible. These individuals usally have stellar MCAT scores, great EC, research experience, and excellent GPA.
I would contact the schools to make sure though. It could save you some money in the end. Good luck to you.