This is a fresh installation of FSX Acceleration, just put it in yesterday. No ADE files or anything...
If you reinstalled FSX, if you haven't removed the previous FSX folder manually, it's not a fresh install, since the FSX uninstaller will only remove files that it had installed, but not anyting else you might have added after that and will also not remove any default file that was modified.
And even if you removed the previous FSX folder manually, it's still not a 100% fresh install, since the FSX uninstaller will also not remove the local settings folder that contains fsx.cfg, saved flights, etc. so, to be considered a really fresh install, you should remove them manually as well.
Of course, this assuming you left JFK on top of the Scenery Library after installing it, which is where its installer puts it by default.