Click the "profile" icon, top of page. When the user control panel opens, click the "profile" tab. On the left, scroll down to "edit account settings" and click. That page should have your username and password (blanked out), and lines to change (and confirm) to a new password.
Let me know if you have trouble.
BTW, Mick and I can do some things normally reserved to admin level. Just let us know when there's a problem.