timeing out a running script

Is there a way to timeout (end) a script that has paused for a specified length of time.
for example a msg has been sent, but no one has responed (like clicking a ok button) for a specified length of time.

the reason i am asking this is i have scripts the run off a shared drive. (executables)

what happened was one of my assoiates was runnnig one of the scripts on his computer, he went home and let it run, the script sent a msg and of course no one was there to click the ok button.

i had to make changes to script and when i went to copy the exe from my folder to replace the one
in in the shared drive it said it was in use by someone else. I had to wait till the next day when the user came in and released the exe.

if there was a time out feature on that script then i would have to wait.

better yet would be having a script like the following that woulld work on a network instead of
just my computer

[b]

[/b]
$prog = inputbox("","enter full prog name")
;$prog = $prog & ".exe"

while 1
$PID = ProcessExists($prog)
msgbox(0,"",$pid)
; Will return the PID or 0 if the process isn't found.
If $PID Then
 ProcessClose($PID)
Else
 exitloop
endif

WEnd