Change Class or multi class.

Cados

Is it possible to change your class or multi class ingame?
I forgot to bring a thief

CutlassJack

Humans can dual class to thief if they have at least a 16 dexterity and arent lawful alignment.

RAM021

CutlassJack said:

Humans can dual class to thief if they have at least a 16 dexterity and arent lawful alignment.

... requires 17 DEX, not Lawful Good and a 15 in the current class's prime stats. Must also be a Human Fighter, Mage or Cleric .

Macona

You can modify your class (and other things) in EEKeeper
http://forum.baldursgate.com/discussion/16497/ee-keeper-updated-to-v1-0-2

I had to use it myself, as I accidentally dumped all my thief skills into 'Set traps' instead of 'find traps'