I think it is the exception to the "rule" (take your pre reqs at a 4 year uni if at all possible), but SDNers and uninformed pre-meds misconstrue the "rule" to mean that CC pre reqs are not allowed.
Most applicants take the classes as traditionals as part of their UG curriculum (they are pre-med). A growing number of nontrad college grads take the classes in a post bacc (formal or informal). While it is always advisable to take them at a 4 year university, there is no hard and fast rule against taking them at a CC (there are reportedly exceptions to this - BU may have something to say about acceptability of CC courses - may also be less welcome at top research med schools, too - I really don't know of a list of schools in this regard, though).
Like everything, it depends. If you went to a 4 year university and did well (say 3.7+ GPA), but for the pre-reqs you later attended a CC, I think the truth is that you will be OK - not to say it would not be "better" to attend a 4 year university for the pre-reqs - but you will not be raising too many eyebrows as someone who was trying to avoid a tougher university environment.
Also - if you do the pre-reqs at a CC, you really have no excuses when it comes to grades. Any cumulative GPA below 3.7, if not actually closer to a 4.0, will be viewed suspiciously.
Finally - as a nontrad, you already know you need to apply broadly. This is probably doubly important if you take the pre reqs at a CC. The truth is that some if not most med schools will be OK with it, but some won't, so you need to apply very broadly to account for the schools that may screen you out...
And as the other poster asked, her MCAT could also have made a big diff - a high MCAT, coupled with high CC grades, would be a positive thing. A low MCAT could be a killer...
