Things to note before contacting an in game GM.

Important: This is only for characters of the May 13th 2011 merger at this time and your name must have been forced to change on the merger to be applicable.

#1 Remove the items in your characters auction house.

#2 Clear your mog mail send and receive boxes on your character.

#3 (Optional) Attempt sending one gil using mog mail to names you're interested in. If the name is taken then it will allow the item to be placed in the send box. You don't actually need to hit send because the game will reject non-existent characters. Be careful this isn't 100% verification that the names rejected are open for use. They may still be reserved or could've been banned in the past.

#4 Contact the GM using help desk select "report a violation",then select "yes I have." Using this line "Second chance name change one time opp please." seems to be very effective.

#5 After speaking to a GM and being accepted log off game and return to the character select screen. Your character name should be yellow forcing a name change. Just select it and choose a new name. GOOD LUCK!