[otrs] adding a customer user

For 'customeruser' in the admin area, you can add a user to the database and create a login, right? is there any way for a customer to do this themselves? As in, a customer goes to the website, wants to put in a trouble ticket, but has never been here before. They can't login until a username and password are issued to them. is there a pre-login page for new customers that would allow a customer to submit a username (their email address) and a password, and then they can go to the login page and continue from there? That way the customer doesn't have to submit a request for a login, wait for a reply and then go log in.. All customers would have the same limited priveleges. -- Jon Conkle