The username is part of your "Account". The "name" is specified by the user during initial registration or assigned by the administrator when installing programs and configuring the computer. As a rule, a user can change his "Name" on the "Account Settings" page, but this option is not available to users on all systems.
Necessary
Know your current Username and Login Password
Instructions
Step 1
To change the "Username" in Windows 7 and Vista: - Go to the "Start" menu and open the "Control Panel"
- Click on "User Accounts", then "Change your account name"
- A window with an input line will open on the screen. Enter a new "Account Name" and click the "Rename" button.
Step 2
To change the "Username" on the sites of online stores, forums and other Internet sites: - Enter the site, specifying the "Name" and "Password"
- On the main page of the site, follow the link called "Account", "Personal Account", "Profile Settings" or "Personal Data"
- In the line "Username" enter a new name
- Save changes by clicking the corresponding button
Step 3
On some sites, the "Username" cannot be changed. In this case, you can contact the site administrator, his contacts are usually listed at the bottom of the main page of the site. If the measures taken did not help, register on the site again under a different name.