You can change the credentials you use to log in to your hosting account via FTP (to upload files to your account using an FTP client).

To change the credentials associated with your hosting account

Log in and go to the Account Manager section.
Click Web Hosting.
Click the Manage option displayed next to the hosting account you want to use.
Click FTP Access.
If you do not see the icon, click View More in the box that contains the domain name that you want to use, and then click FTP Access.

In the Name column, click the FTP user you want to change.
Enter the new login information, and then click OK.