how to get dynamic URL like mydomain.com/username using zend framework

[Joori]

I am developing an application using zend framework. In the application I have to provide a URL for each user like mydomain.com/[username] then public will be able to view his profile.[username] is the username of the particular userBut how can I achieve this ? I think in ZF mydomain.com/username tries to get the controller with name username, but I should show user profiles in this URL and it must goes to the right controller if something else comein like mydomain.com/controller1Please helpThanks a lot