does the network server correctly handle windows shutdown?

I'm deploying Derby as a network server on a few Windows (XP) machines. I can handle automatic startup via the Windows startup folders, but there's no shutdown folder, and I can't rely on the machine owners to remember to issue the Derby shutdown command before they shut down or reboot their machines.

Does Derby handle machine shutdowns that occur while it's still running, or do I need to find a way to get stopnetworkserver run before normal shutdowns/reboots?

Many thanks!
     Peri