The following forms are available for downloading, printing and completing. Information about Justice Court Suits and Civil Cases in the Harris County Justice of the Peace Courts.Complete all necessary information; Attach documents; Click submit. Mail. Cut and paste the appropriate template for the court in which your case will be heard. Choose from District, County, County Court at Law, or Justice Court. This article explains what demand letters are and when they are useful, and provides some examples of common situations where you can use one. This guide includes forms and instructions for a letter and affidavit to request that the court register an out-of-state custody order in Texas. These forms are for use in district court. Some Texas counties conduct family matters in county court. Complete Final Forms and Prepare for Court.