Advice for getting a CNA or Phlebotomy job...

I worked as a CNA/PCT in a large hospital, worked in the Emergency Room, ICU, CCU and all medical floors. I was also trained as a phlebotomist, worked in two large hospitals and several clinics as one for about 8 years. I now have been working in a different field for about 8 years and am on a list waiting for nursing clinicals. I want to get a job in a hospital again and have a lot of experience, but have applied for about 20+ positions, but have yet to get one interview. Any advice on what to do?
this amazes me as I would think your skills would be in demand. Maybe you need to try non-hospital facilities. Are you limiting yourself to certain hours or days to work?

Call them, call them, call them. Continue to show interest in the position and they'll show interest in you.

Not limiting hours, I have applied for 2nd an 1st shift and I believe, even one 3rd shift job. I just keep applying and even sent an e-mail to a couple of the human resource people asking what I should be doing, or if I should be doing more. I was trying to take the clinicals for the phlebotomy certification and there is a 2 year wait for those, I am hoping to be into nursing clinicals by fall of 2011. Otherwise, I guess I just keep applying...