WHERE ARE THE "MERICAN AIRLINES" TEXTURES?

youre supposed to use a tool called "Traffic Paint X" that comes with Traffic X And That Will let u easyley edit it

No one has yet answered your specific question, so I will give it a try.  I do not have access to my FSX system at the moment, so I can't give you the exact folder names, but hopefully I can give you pointers on how to find what you are looking for.  All aircraft used by FSX are usually found in subfolders of the "Simobjects" folder in FSX.  I believe that the TrafficX files are in a subfolder called either "JustFlight" or "TrafficX". Within that folder each aircraft type is defined by a subfolder, usually with a name that describes the aircraft type that it defines.  Within the aircraft  folder there are texture folders, one for each livery.  So if there is a Boeing 757 painted in the "Merican Airlines" livery, then you should look in the Boing 757 folder (again I can't give you the exact folder name, but you should be able to figure it out) and then look in the Merican Airlines subfolder to find the files that describe that paint job.   Hope that helps a little.