dash in url

[eluser]Ajaxian64[/eluser]
Hello everybody,
I would like to have website.com/xxx-yyy and website.com/xxx-yyy/first-second for example
ex: website.com/you-and-me/and-the-other

How can I do this with CI ?

should I write the controller you-and-me.php and the Object controller YouAndMe ?

Thanks

[eluser]richthegeek[/eluser]
http://ellislab.com/codeigniter/user-gui...uting.html

[eluser]Ajaxian64[/eluser]
Thank you.
I thought that exists a specific naming convention for files/controller ... (like in cakephp :red: )