将子文件夹显示为主文件夹

My main directory contains:

1. john (folder)
2. jane (folder)
3. james (folder)
4. config.php
5. index.php

I would like to reorganize them into:

1. user (folder)
2. config.php
3. index.php

WHERE the folder "user" contains:

1. john (folder)
2. jane (folder)
3. james (folder)

BUT keeping john's URL as www.mydomain.com/john AND NOT www.mydomain.com/user/john

Which web-server do you currently use.

If Apache => use Rewrite URL http://httpd.apache.org/docs/2.0/misc/rewriteguide.html