How can I get legal help

by Samantha
(Texas)

I was in the military 10 years ago and engaged to another military member. I was sent overseas but found out I was pregnant and sent back. The father turned his back on me and told me to find someone to raise the twins as he did not want them. Our commander ordered us to attend parenting classes and was aware of my pregnancy. The father broke up with me. I stayed in until right before the twins were due. I went home and had the twins and filed for child support on the father. He was overseas at that time and the military refused to have him served. He moved around so much and I kept loosing him. I finally found him and we have a support order in place. Mt problem is: He is in Colorado and is financially in great shape. I am in Texas supporting 3 children on my own with no assistance. The fater has agreed to the current order but wants to take me to court over the 9 years of back pay, stating he didn't know about the twins. I am trying to find records but 9 years is a long time. I cannot afford a lawyer and I cannot seem to locate ANYONE who can help me. What can I do?