Ok, I did what you say and its seens to be perfect. I still got that STK try to delete some default columns but I dont mind.
I make a File Compare Report, comparing 2 dumps of my database.
At left its a default phpbb3 install database and at right its my phpbb table.
And here its the result. The main diference its that in some case use var and other cases use varchar
You can check the diff file here: http://www.halospain.com/soutlink/Diff.htm