[Zope] About clock-server

Hi, I'm using clock-server in zope.conf for running scripts periodically. The problem that I have, it uses the hour of starting of zope ... and I want it uses the hour of local server (it runs under Windows). If I restart zope, it will have initial hour again ... and I want the it runs the scripts using windows time and not hour of zope restarting. Is it possible? Or I will have to use schedule task of Windows :-? Thanks beforehand. Cheers...