General nursing question

I am a senior majoring in business administration. I want to get my RN/BSN. Has anyone done this? What kind of position or salary could I expect? On salary.com for a RN is all around 50k; but on this board it seems like the highest I have seen is like 35/hr....? Money is not the most important aspect of my venture to nursing but I would like to get a realistic answer.

Also is there any bsn programs with a specialization in er medicine or do most just get their bsn or rn and then pick what they want to do?

Thanks in advance