This is a civil case, not a family law case, but I don't believe you need to file anything. If he appealed, then it is going to the higher court and will (likely) be scheduled for an arbitration due to the low amount of the award. Anything under $50,000 if supposed to be heard in arbitration first. In my local counties, this is a panel of three attorneys from the local bar. Check with your county prothonotary, or the office of the District Justice who first heard the case. They should be able to tell you how they handle an appeal from the district justice's ruling.
Answered on May 07th, 2012 at 4:30 PM