Go to you're C: drive then to program files then to Microsoft games then to Flight Simulator 2004 (fs2004). There you will have lots of different files just follow the aircrafts readme in the airplane that you downloaded's file. It will tell you ware to cut or copy files and were to paste them.
Contact the court where the ticket was issued. Some courts have their docket accessible over the web, you can look up your name and find it. With the number, you can get a copy. They may charge you 50c or $1 for the copy.