Hi 40nikar,
The user ID cannot be changed by the user. One workaround is to cancel your current account and create a new one. If you have important things attached to your current account (classified ads, Dancetalk messages, premium account status, etc) and don't want to delete it, contact us and we'll change it for you. Please give us a couple of options for a username, because your first choice may be taken.
Regards,
Jonathan Atkinson
www.ballroomdancers.com