http://bugs.winehq.org/show_bug.cgi?id=11749
--- Comment #24 from Fredrick Lockert fredricklockert@gmail.com 2008-10-08 10:11:02 --- I see, that's strange though, because PlayOnline works just fine after adding a native dxdiagn.dll ... at least it doesn't have the startup problem, only a few glitches.
Other people has it working, including me.. Check the FFXI AppDB http://appdb.winehq.org/objectManager.php?sClass=version&iId=2739
It might be a system specific problem you have though..