Okay first off read this.....
http://www.8ballpythons.com/journal/...ingseating.htm
Then read this.....
http://www.8ballpythons.com/journal/feedingtips.htm
Then read them again, and once more for good measure.
Might I ask who sold or gave you a non-feeder? Just so we know what you know or what you need to know - how much ball python experience do you currently have?