Shutdown script question

I've recently been looking at implementing a script that runs just prior to

PC shutdown, I have read this article:

http://www.windows-help-central.com/windows-shutdown-script.html

which states that "You can access network drives from startup and shutdown

scripts. That's because startup scripts run after the computer initializes

network connections and shutdown scripts run before the computer deletes

network connections."

Unfortunately this doesn't seem to be true as I definitely see the 'closing

network connections' message appear before 'running shutdown script'

message & as expected the script hasn't executed. I need network access as

the script is on one of our servers, eventually I would like all users to

run this script via a GPO if I can get it to work, does anyone have any

ideas on how to get things to work as I want?

TIA, Jase