UTF-8 char in codeigniter

[eluser]scherman[/eluser]
Hi, i have a problem. I hope you can help me. I don’t speak english very well, but i try to explain me good as i can.

I am from argentina, so, i have to work with the “ñ” character. For SEO, i want include the “ñ” at the url for some words, so, for example, i have:

- Controller: webdesign.php
- Route: $route[‘diseñoweb’] = “webdesign”;

But, when i enter to “www.domain.com/diseñoweb” it doesn’t work. And i need the “ñ” character in the url.
Do somebody know how can i do this?

I have asked for help, but nobody could solve it!

Thank you!