Can I use credits from my existing bachelor's degree at the Big 3?

[effdub]

I guess my primary hesitance to just go for the MBA (apart from the cost, which is a very real concern) is that I don't really have strong competency in the fundamental areas of study/practice. So if I jammed my way through, I'd likely come out the other end with a piece of paper and not a whole lot to back it up. I've met so many MBAs that are exactly that: guys with paper that are clueless. The world doesn't need another one, in my opinion.

I've taken one business class ever: microeconomics. That's it. I really don't think that's a qualifier for jumping into an MBA, despite everybody telling me that there are essentially no pre-reqs for MBA, you just need money. I feel that I would be better served, educationally, by studying the fundamentals and getting a BS in business. My primary goal is to learn, and after analyzing the different degree options, BSBA looks (on paper) to be the best bet for widening my knowledge base in the areas I'm interested in.

I know it sounds crazy, but for me this whole exercise is really about learning new things. Career advancement is secondary (or maybe tertiary).