userid on userlist, instead of userprofile

I have a problem with CB: I *DO* know that it doesn't support UTF-8 characters, but some of my users registered with FaceBook and the social plugin I'm using adds special characters on the username (such as accented letters).

I had some urls on geocode maps and I was able to avoid the SEF problem forcing the maps to load ID instead of username.

I'd like to do the same with my userlist page. What is the page I would edit to change my url from username to user id?

To be more specific, to get:

component/comprofiler/userprofile/*ID*

instead of:

component/comprofiler/userprofile/*username*

?

Thank you in advice,

Valentina

P.S.: you can check my userlist here:

www.catsbe.com/component/comprofiler/userslist.html

Is there a solution?

I remember having a problem like this. If I am not wrong, the ID was shown in the url only when the username was an email address. Maybe the @ was not accepted by the component