Remove register link from index page

Hi All,

I've got an elgg installation where users need to be invited before they can register and as such the normal 'register' link on the homepage won't complete as the invite ID isn't encoded in the link.

Is there a way to remove this 'register' link from the homepage (beneath the login box) so that people cannot get into trouble when trying to register?

Had a deep dig around and can't uncover the answer!