if ($post[userid]==xx) {
$post[username]="<nobr>$post[postusername]</nobr>";
}
Replace xx with the userid of the user you want the username to stay on the same line. That should do it.
And by the way... fix up that bad attitude of yours. Boofo and I are trying to help you here.
This doesn't seem to work. I tried it, since I just had the chance to and is what it did was when I changed his name from Giraffe Hunter back to Giraffe }{unter it will show it as just that. But when I make the changes to my functions file and upload it and refresh the page, his name goes back to the name with an "H" instead of "}{".
What I mean is that you didn't pop his name in the code, right? You only changed the userid, and copied the code straight to functions.php where I said? If so, it should work then. I thought you put that username in the code as well...