Different display name than username

[DiStefano]

Hi,

For my study program I need to set up a forum for students to be able to communicate with eachother. Since all the students already have an account to access the website portal of the university I was asked if the username and pass for the forum could be the same as that of the portal. That is not really difficult, but it's not really nice if our board has 120 members all with a username like: 432556kd. That's why I want the users to be able to set there own display name without changing there username. I know that Invision has this option implemented, but since I am not a real big fan of Invision, I was wondering if there is a modification for vbulletin available that has this feature?

Greetings,
Fabian