Warning message / dialog, removing system from domain

[Tr0utman]

We have people with rights to remove their systems from the domain. Before a person takes themselves out of the domain and added to a workgroup, is there a way to display some type of warning message or dialog before they put their system in a workgroup?

It would say something like, "Before you click on 'Workgroup', know that you will lose local administrative access to your system. First create a local administrator account. If you do not know how to, please contact the Helpdesk first."

Regards,

Tr0utman