I need to change my user name, and i don't want people to find something in google by making a search with current user name.
I need to clean everything that is with that user name
PLEAAAAAAAAAAAAAAAAAAAAAAAAAASE
Is it possible
Do i have to pay 4 that?

As the AmpedAsia FAQ stated, the "change username" featured has been disabled. Sorry...

But if this is really important, you can appeal to the admin, namely Lance, for the username change... just PM him and give him a rundown of the reasons why you need the change...