You could do 2 years at a college that doesn't offer nursing (including taking the core science prerequisite classes for nursing school), and then transfer to a 2 year nursing program. However, that would be an expensive way to become a nurse, if you spend the first 2 years at USC, but don't even get USC on your diploma.
There also are some colleges with programs to get an RN after you get a BS from another college. That would probably require a total of at least 5 years, or much longer if you haven't taken most of the required classes at your first college. That option may make sense if you wanted to combine two different disciplines, such as your bachelors degree in management and then get your RN.
The following link has info about what it takes to become a Nurse Anesthesiologist, after you get your RN.
http://www.aana.com/ataglance.aspx 
