Interesting story that can be seen here:

Nursing Students Overwhelm Schools

Hi,

My name is Krista and I graduated from nuring school in Aug. 2001 but after I took the state boards 3 times, I haven't really felt as if I was ready to take it again. My questions is: Is there anyone that knows of an online refresher course for GVN that haven't been able to pass the boards? I would really appreciate any help that I could get.

Thank you,
Krista

I did a quick search in Google for online nursing refresher courses, and found:

http://www.ndna.org/rn.htm
http://learn.sdstate.edu/nursing/LPN.html
http://www.tnstate.edu/nurs/Refresher2.htm
http://www.bvnpt.ca.gov/vnrfresh.htm

Not sure if they're exactly what you seek, but hopefully they're a step in the right direction (if you contact them, they might have leads to more closes match your requirements).

Good luck!