You can do it with save editing, too. Make a rogue/warrior version of your character, then play through the game until you get to Kirkwall, and save your game. Then start up a mage playthrough, and again, play through until you get to Kirkwall and save. Open this new save, and the old save, in the GFF editor, and copy Bethany's party data over from the old one to the new one. You can delete Carver too, if you don't want him around, but the game plays fine if they're both alive. Leandra and Carver will still think Beth is dead and Bethany will still think you're a warrior/rogue, of course.
There's a thread somewhere around here with more detailed instructions and possibly pictures. Lemmie see if I can dig it up.
Edit:
Here you go.
Modifié par Quething, 23 septembre 2011 - 06:23 .