I also need to know if i can file the modification request in a different county from where the original order originated? I currently have our child at my house, but she has pressed charges for back child support and we go to court w/in the month. The original order came from Gwinnett and she still has "custody" on paper and is awarded support. She lives in Fulton and I'm in Cowetta. Do I have to file for a modification in Gwinnett? I don't have her address, can I have her served the day we appear in court?