Para,
I believe the best way is to talk to someone from human resources in the hospital you are interested in working at. That is how I got my job as a dental assistant a few years back. I went in and asked if they were training. Also, if you know a nurse or another person who works in the hospital you can have them put a good word in for you. I am not sure if certification will get you extra money, but I could see how it could. Go with whatever interests you the most. Even if it takes longer to get there.