Is there a point?

I'm deciding if I should retake classes I got C's in to bring my gpa up (Gpa 3.0, science Gpa 2.8). I've been told that I need to do a post bac, even if I retake those classes I got a C in, they still said post bac is still necessary. Aren't post bac's where you "retake" classes anyway? So should I just forget about retaking those classes and take upper level classes then apply for a post bac? Or retake those classes and still apply for a post bac since doing the calculations my sGpa will be... Is there a point?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums