How long are prereqs good for? Specifically for CCAC

I started my BS:biology undergrad back in fall 1998, graduated from a nice 4 yr college, did grad school for a couple years in biochemistry not enjoying it, and now want to start a nursing program. My GPA in undergrad was just under a 3.0 and I'm seeing that most BSN and accellerated programs require a 3.0. So I'm looking over the ADN program at CCAC, but they're really vague as to what counts for prereqs. I'm mostly worried about the intro to biology requirement (needed to take A&P). They say a basic bio course is required or high school class within 5 years. I took something similar at the begining of undergrad 10 years ago, but TONS of more advanced biology since then. So how useful are my old classes now? Any other advice from students there? I'm hoping to take A&P in summer/fall and apply for next spring, working part time where possible to pay bills.