1) Login or create a CM Fanzone account by visiting
https://account.coolermaster.com/LogOn.aspx
An account can be created by clicking the "Join for free" link on the site or by using a Facebook or Google Plus account
If using a social account for login, you will need to verify permission for the CM Fanzone
2) Once logged into the CM Fanzone, click on My Profile under the "My Account" section of CM Fanzone
3) Enter your information into the form and click submit to save the changes.
For information on changing the User Avatar, please see this Changing your User Avatar.