[James Birkett]

Hey goshalim,
By default, vBulletin has put the plaintext of the username on the Forum Home templates. This can easily be edited by editing the template.
To show usernames in plaintext - the code is: $user['username'];
To show the usernames with markup - the code is: $user['musername'];
So, what you need to do is call $user['musername'] rather than $user['username'].