First my thread was moved to "Resolved issues": http://forum.square-enix.com/ffxi/threads/51058-XInput-%28Xbox-360%29-Controller-not-working-properly-in-Vista.-Win7-alright.

IT WAS NEVER RESOLVED!

Then the email support said it could give support only through chat.

Chat support was not even aware of the XInput flag of the Controller utility. Chat support said "oh, it must be new, because I'm using PS2 controller for years I didn't noticed that options".

How can this be called support?

So please take into consideration updating the game to work with Vista driver (xusb21.sys) because you made recently it works with Seven driver (xnacc.sys). Proof of that is because a lot of topics of people not aware the controller works with Windows 7 and the Chat support also not aware.

Using third party drivers is not a solution.