PLEASE PLEASE HELP!

Hey all! I need some serious advice and help!! Okay here is my story, I am a "Junior" in college. I went to Lindenwood University from 2007-2009 and now I'm at Meremac. I have so many credits that I do not need. Anyways long story short I am still left with some classes that I need, like A&P 2, Micro , and Algebra. So I have another semester left. Anyways I am in A&P II now and I am doing absolutely horrible so I need to drop the class. I have 2 C's already in my Science courses and one B I really REALLY wanted to get my BSN within the next 2- 2 and a half years. I don't know if having your BSN and RN are really that different in pay and such? Also, I am having a huge amount of trouble finding a school that will accept me any ideas??? I have already looked into Maryville and UMSL.. UMSL said my science GPA has to be a 2.5 or higher and mine isn't ( should I just wait a year and apply for spring 2011? Which means I will be in college for 6 and a half years just for my BSN and an associates in general education? Or should I just apply to Lutheran School of Nursing for fall 2010 and ony have my RN and an associates in general transfer studies? Or is there a way I can transfer from Lutheran School of nursing to UMSL ? What is the difference between a BSN and an RN? Thank you!! ~~~~Mel