This guide includes forms and instructions for a letter and affidavit to request that the court register an outofstate custody order in Texas. This guide tells you how to ask for a custody, visitation, child support, medical support, and dental support order.This guide contains information on all the Family District Courts, Associate Courts, Tarrant County Child Support (IVD) Court, and Child Protection Courts. To discuss your child custody case, call us today at (817) 422-5350 or fill out our contact form on the right to schedule your free case review. Petition for (Custody) (Visitation). Our child custody lawyers bring immense value to child custody cases in Texas due to decades of experience in the Tarrant County family courts. Please fill out the form below or call our office at 817-498-4105 to schedule a complimentary consultation. This form is to be completed after the AOP has been signed or a person has declined to sign the AOP. What Is a Family Law Specialist? Interference with Child Custody on Westlaw.