Dual class change?

Hi all...I tried the search function, but man, that can be more frustrating than just asking. So if "use the search function" is your answer, save your typing fingers, I don't need you :-)





Just real quick question: Is it possible to change your dual class while maintaining it's level? If so, where and how...and is there an item I need to purchase? If no, oh well it was just a thought...no biggie.





TY