I wouldn't suspect much work at all in the Database. If I'm not mistaken, the classes are simply "locked" from the particular race. If that isn't so, then you'd have to go to the race, and add the warrior class. If it isn't given at all to add the class, then some new scripts would have to be added. X.x If I'm wrong on any of this, Admins could tell you. Them smartasses <3