data/players/--- just take the character you want to become a Gm and put '''' acces="5" ''''..
and about outfit,
loocktype="75" <- just replace the first number, thats enough.
then its done.. if its were xml..
sql you going into the database.. accounts..
set account type to "3" and then go players and the player you want to become gm and put player id or so to "5"