How can I reset my password?

To reset your password, navigate to the CommBiz log on screen and click Forgot your password? Then follow the prompts to create a new one.

Why does My Security Centre tell me that I can't create a login with my own name?

All login IDs are unique. Another user (from either your own or another service) will have already created this login. You may like to consider an alphanumeric alternative i.e. JohnSmith123.