Can see computer in address book but can not add to team

I have a Windows 2000 PC I can connect to via the address book. But I want to move it into a TEAM. It will not let me drag and drop it and if I try to create a new connection in that TEAM when I click on OK, nothing happens. I know that RealVNC no longer supports Windows 2000 but why can I connect from address book still? It works fine, just want it to show up in a TEAM.