Personal Training Certification @ Home...

I was looking into buying one of these PT certifications that you do at home in order to get certified. I am a ESS/Food & Nutrition major so my current studies will lead me into this field, and the college i am at offers a certification program so i will eventually get certified at a University....I was just wanting to do this to try and "get my foot in the door" and start working as a PT through the rest of my school so ill have experience when i graduate.

I am looking at the NFPT certification, and the NESTA certification....does anyone know if these would be worth my time and money. And are they credible in the field????

hmmm....anyone???? wtf these were like the 2 biggest names i could find...im open to any and all advice.