Zend Framework - getParam() Question

Hi Everyone, Zend Framework getParam question.... I'm trying to get a value from the url... I know how to grab: http;//www.website.com/index/user/1 that's the index controller, $this->_getParam('user'); (value = 1).. What I'd like to be able to grab is just off one thing from the url... example.. I want to give an article a unique/clean url... so, when I go to: http://www.website.com/article-clean-url I can somehow grab that 'article-clean-url' as a value and use it for a lookup in the database. I've tried everything and search all over the place. I can't find the answer. Can someone tell me how this is done? Thanks... -- -Dan Joseph