WordPress MU

I'm using wordpress MU to manage a system of blogs internally as a means of documentation. I've chosen it over just installing multiple blogs since it has a singular admin, and I can share user systems between multiple blogs (and change that users permissions depending on the blog).

I see that 'add a new user' has been killed in the Users.php file:

case 'adduser':
die( "This function is disabled. Add a user from your community." );
check_admin_referer();

if(count($errors) == 0) {
header('Location: users.php?update=add');
die();
}


How do I go about re-enabling it? I see lyceum has this feature, however, it feels very buggy in comparison to wordpress mu, so I'd like mu to be my choice here. Thank you!!

I think I'll have to go lyceum or do multiple installations -- wordpress mu does not seem to be made for this unless I'm off my rocker? It seems that the user schema is really bent more on people adding their own individual blogs.

search the forums for a post that James(Farms) made. He has an older users.php that will allow you to do just what your looking for.

EDIT:

Here's the post: Post#-4838

and here's the file: http://incsub.org/users.zip

Thank you andrewbillits:) Much appreciated -- I'll use this frequently. I am still debating on lyceum, as now that I've figured out more of it's installation, it's user control and overall blog control seem more orientated to a work environment than MU -- we'll see!