User page Facebook like routing

[eluser]ppardo[/eluser]
Hi all;

I'm trying to make a regexp for routing a controller as facebook user page like; I tried everything but i can't acheive what i want.

As anybody knows facebook user pages are like this: http://www.facebook.com/user.name.surname
Due to CI conception of routing this is practically impossible with my regexp skills(not very good).

I'l appreciate any help on this.