When doing a remote shutdown using a dos command how do you remove or turn off the shutdown message without actually physically shutting down a second time due to this message?

We have implemented a shutdown/reboot policy two months ago to preserve pcs from physical wear and tear also often there are certain updates that require a reboot.  We have used symantec ghost console to push out a task that included a script to shutdown and another task with a reboot script.  In our office, the majority of the pcs are windows xp and there are only 15 windows 2000 (compaq Ipaq pcs) in our training room.  Each time when we use these tasks for the windows 2000, they always fail reason being that they did not have the specified files.   I've research this issue and found that by default windows 2000 doesn't have the shutdown.exe in the system 32 by default and it must be downloaded from the windows 2000 resource kit.  I didn't have one available, so I decided to copy the shutdown.exe from windows xp and dropping it into the system 32 folder on two test pcs.  I tested the reboot task on both pcs and it worked perfectly; However, the shutdown task worked but the twist is that toward the end it would give you that message "it is safe to turn off the computer" when that happens, have no choice but to physically shut the pc off which defeats the purpose of the shutdown task.  One of my collegues thinks perhaps it's the ACPI settings and to check the bios.  I've check the bios settings and there is no indication on how to disable this message off.  According to my collegue, he did update the bios recently and my question is that can you remove or bypass that message without having to physically shutting the pc off a second time?