It depends on your operating system, but you can find your saved flights in the "Documents" folder in Windows.In Vista, you can find it in the path: C:\Users\(Your user name here)\Documents\Flight Simulator FilesI don't remember at the moment the path for others version of Windows. Look for into your "Documents" folder. For each saved flight there are two files with the same name, but one with de extension .FLT and the other one with extension .WX. You have to edit the .FLT file, opening it with Notepad.