I took the same journey you are about to take!!! I have a BA in communications! After finishing College in December of 2006 I worked in HR, but interned with the same company for the previous 4 years before they offered me a full time job. So I had a good job, doing exactly what i thought i wanted to do! Well after just 4 months of full time employment i planned my escape. Applied to an accelerated ADN (RN) program. I took A&P while working full time just to get a taste of sciences. Well i made it through. Left my job in December of 2007 and did all my prereqs (Micro, A&P, child psychology, Chemistry) before starting my full time Nursing program in Sept of 2008. It wasn't easy. And I completely agree with the previous post. Studying in Nursing school is a completely different beast. But you can do it! Just don't give up or talk yourself out of it! I'm currently a nurse!
P.S. Even though I have a Bachelors degree in Communications it doesn't go a long way on a nursing interview, it is not the same as a BSN. You need to have the technical nursing skills, that's what they are looking for. All the best!