I have a text file but dont have a clue what to do with it.Do i need a tool or something?ThanksBobG

You need AFCAD by Lee Swordy. Run AFCAD, then under one of the dropdown menus, select "Import airport". Browse to and select the new text file (KSEA1.txt, right?). You should now see a bunch of lines and green dots -- that's the map AI will use to navigat the airport. Go back into the drop down menu and select "Save". You will be prompted to overwrite the existing file -- click okay. When you start FS2002, it will generate a few scenery files. After that, the process is done. Go to Sea-Tac and watch the AI.

Ok Downloade AFCAD and saved the new file. That was easy. Great little program. Thank you very much Psychophant1!!!!RegardsBob G