From your profile, I think you're competitive enough that you can focus on the first six schools on your list -- UNC, Duke, Texas, Georgetown, NYU, and Michigan. You have a reasonable shot of getting into at least one of them assuming you put in strong written applications for all of them.
GPA is an issue, but not as huge an issue as it would be for law or med school.
In any case, the best way to balance out that GPA is to either re-take the GMAT and score at last 700+ (or ideally 740+ if you can), and take 1-2 courses in something quant like stats, calculus, algebra, etc. at a local community college or online extension course that many universities offer (and the courses don't have to be hardcore upper-level classes; they can be 100-level freshman courses).
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