Heya,
Good luck on your journey. I've barely started mine. I joined this forum this December and it's been a great place for information. I've got my steps and timeline mapped out, so I'm excited. I'm going to start post-bac work in Fall 2011. (I'm saving up for tuition and refreshing the gen chem that I took almost 10 years ago). I'm totally optimistic about med school acceptance.
I don't think that being an RN is a drawback at all. As a nursing student I've had the opportunity to learn about and be a part of various types of healthcare environments from outpt. clinics, to home hospice, to school nursing, psych, maternal fetal, peds and of course acute inpatient care. I've consulted with and worked alongside various members of the healthcare team. And then there are my own experiences spanning almost 6 years caring for people. I think that goes a long way toward demonstrating that I understand what medicine is, what current issues are, and that I like it- as opposed to the worn out nebulous "gee I think the human body is fascinating and I want to help people".
And no, of course that's not to say that I expect med schools to fight over me, but I can easily articulate my motivation and interest.
I'm really looking forward to taking orgo and bio and biochem; I'm trying to psych myself into believing I'll enjoy physics! I'm nervous because it has been such a long time since I've been a student. I've always loved the social aspect of school and I'm looking forward to hosting study groups and baking snacks at my house.
I'm trying to talk some of my colleagues into joining this adventure with me. By now, probably everyone at work knows of my intentions. Everyone is really encouraging and when I tell people that I'm interested in forensic pathology, generally they think that is pretty cool, too. I had the opportunity to "shadow" 2 forensic autopsies and I'm hooked! No one has said anything negative (to me anyway) and so far nothing behind my back- I'm sure it would get back to me. I don't see my desire to go to med school as wanting to "be better than a nurse" or any of that nonsense. I still love what I do, and have enormous confidence in the value of my knowledge, skill, and compassion.