Yeah, I replied to your PM, Madhatter. But he's correct, and leading you on the right path, as well. What he listed is good. True the CSCS does require a degree in a sports related field, like what he listed, and usually a good one is Sports Sciences. I'm not real familiar with UNT's programs, but I know most schools have a decent one. Southwest....er, Texas State Univ. in San Marcos has a REALLY good program for people interested in sports and teaching. A girl I was working with, she quit our club for a while, and they hired her back at the smaller 24 Hour across the street, was at SWT and getting her degree is some fitness field, and she was basically a Trainer for classes. It sounded cool I got my Business Management degree from SWT, :-D! Texas State also has one of THE best Physical Therapy Schools in the state, so you can imagine their other sports programs.
Just do some more research, on prices, dates of the classes, and see what you can do. Especially part time, while you're still working, if that's feasible.