Vinet - FS9 to FSX Migration
FS9toFSx Migration moves previous FS version aircraft to FSX!
Basically, it is designed to process the FS2004 folder. However, it is possible to also select FS2002 and even FS2000.
FSX does not accept .DLL files and gauges from versions prior to FS2000. For FS2000 and FS2002 aircraft FSX will display warning messages: you can just accept them
This tool analyses aircraft.cfg, mdl and air files to find all ressources required. For instance, it looks at a mdl file to extract a list of the textures used and verifies if they exist. It also searches for non standard Windows DLL's.
Sometimes there is a lot of unused textures listed in the visual model file.The migration preset (in file.options) desactivates the logging for this particular category.
NOTE: Some 3rd party aircraft use sophisticated gauges and DLL. They may require an update in order to function under FSx.