mod rewrite locale

Hi,

I have a webpage containing content on a couple of languages. The
content is placed in diffrent directories with the countrycode as name
like(www is the doc_root):

www/de
www/en
www/es

My problem is that when the www/index.php file is accessed I want the
content of the www/en/index.php to be presented but still want to keep
te URL layout of www/index.php.

When accessing the www/de/index.php and www/es/index.php I want it to
be presented with the country code in the URL.

Is it possible to do this with for example mod_rewrite?

Thanks,

Karolina.