[Zope] please help - pcgi on win32

arrghh! Complete pcgi newbie in very bad trouble: I'm having to install a site on NT with pcgi, being used to developing on Linux. I've made some changes which aren't appearing on my site (in fact it's completely broken). Because the site's broken, I copied back all the old sources. But I'm used to restarting servers, and with pcgi you don't do that. Is there a long running process I need to kill? seb