Ejecting Tapes in Windows 2000 Backup

How can you eject tapes either from the NTBACKUP GUI or from the command line under Windows 2000?The “NTBACKUP EJECT /tape:n” command which works fine for Windows NT 4.0 does not work under Windows 2000 and I can’t find any reference to ejecting thetapes in the help menus for NTBACKUP. I used to have batch files set up which ejected the tapes after each backup was complete.