I am assuming you are divorced and at the time of the divorce you were unaware that the child was not yours and that the child support order was initiated at this time? It seems that you should be able to file a Request for Order and request a DNA sample to determine fatherhood.
There are a lot of variables here, so it would be best to consult with an experienced lawyer so this is done correctly.
Answered on Dec 30th, 2014 at 2:43 PM