How to change admin workstation in Proseries 2007

We have Proseries 2007 installed in a network environment and has worked great until the "admin" workstation crashed, keep in mind all data is kept on a different file server. After replacing the workstation we reinstalled Proseries 2007 and it works, however when we reinstalled it, it set it as a standard workstation, not the "admin" workstation. Is there a way to reset this so we can designate it as the "admin" workstation again?

Thanks