I'm a finance/accounting major from Goizueta business school (Emory university). My advice, if you're a BBA, you definitely want to have some work experience in your field before you decide to apply to med school. I worked in VC for 2 years and then decided to make the switch. Went and did a post bac for my prereqs and smoked them, then applied. I got in and will be starting school this summer. I really feel like my business experience was a major plus to my application. It made me a different applicant and I stood out. I also had to truly explain why I wanted to go back and become a doc.
Oh and my undergrad GPA wasnt anything stellar. My GPA started over when I joined the B-school; however, when I applied to med school all those other classes came back into play. I think before my post bac my GPA was around a 3.2
34O on the MCAT w/ a 14 and 12 in the sciences. that def helped.
Good Luck