No econ background, want to do Soc/IR-- postbac?

[gchandra]

So my BA is in Comp. Literature, supplemented by several social science research positions and classes (mostly psych). Now i'm leaning towards anthro/soc with an IR/econ focus, however, and I know I need some Econ classes. Most programs I've looked at want Micro, Macro, and something else I can't remember at the moment.

How do post-bac courses work? Can I just enroll in these classes independently, without getting any type of degree, and get grades on them?

Thanks in advance : )

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