If you are logged into your account, your username will be displayed at the top of the poker client. You can also find your personal information by logging into your account and clicking on the red 'My Account' button, which is located at the bottom right corner of the screen.
Unfortunately, you cannot change your nickname. Your nickname not only serves as your online identity, but it helps players recognize you at the tables. Since you can't change who you are when playing in a live poker game, we generally do not let our players alter their identity online. There are some exceptions to this rule. We will change a nickname if it is offensive. Also, if you've used your real name as your nickname, you can change it by sending an email to Customer Support. In addition, we only allow one account per player. You are not permitted to close your account and create a new one. If we locate more than one account, we will proceed to close all additional accounts that were created.