It's a little tricky getting twisted to run as a service in twisted 1.3.
A main service .exe must spawn a new python process, because twisted must initialize in the main thread, and services don't start in the main thread.  Its easiest to write the service wrapper in python.

I also found its easiest to register the service, then change which account the service runs as.

You could probably choose the child python script to run as 
{{{
python.exe twistd.py -f web.tap
}}}
if you know how to set up the web.tap.



= Service Wrapper =
{{{
#!/usr/bin/env python
#based on http://twistedmatrix.com/pipermail/twisted-python/2003-October/006081.html

import sys, os
import win32serviceutil, win32service
import win32api
from  webserver import WebServer
from subprocess import Popen,call

class TwistedWebService(win32serviceutil.ServiceFramework):
    """NT Service."""
    
    _svc_name_ = "TwistedWebServer"
    _svc_display_name_ = "TwistedWebServer"
    def SvcDoRun(self):
        self.childServer = Popen(["python","d:/doug/dev/play/twisted/webserver.py"])
        self.childServer.wait()
        
    def SvcStop(self):
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
        self.kill(self.childServer.pid)

    def kill(self,pid):
        """kill function for Win32"""
        handle = win32api.OpenProcess(1, 0, pid)
        return (0 != win32api.TerminateProcess(handle, 0))


if __name__ == '__main__':
    win32serviceutil.HandleCommandLine(TwistedWebService)

}}}

= Web Server =
{{{
from twisted.web import static, server, script,error
from twisted.application import internet, service


class WebServer:

    #This is hacked together and not necessarily a good example
    def WebServerConfig(self):
         """return a site object that can supplied to a reactor"""
         root = static.File("d:/doug/wwwroot")
         files = ["d:/doug/dev/play/twisted/mime.types"]
         static.loadMimeTypes(files)

         skiRoot = error.NoResource()


         ski = root.putChild("ski",skiRoot)



         powderTour2k2 = static.File("D:/ransom/photos/2002-PowderTour/PowderTour2k2-selected")
         skiRoot.putChild("powdertour2k2",powderTour2k2)

         scrape =static.File("d:/doug/documents/scraping/general")
         scrapeRoot=root.putChild("scrape",scrape)
         
         root.ignoreExt(".rpy")
         root.processors = {'.rpy': script.ResourceScript}
         application = service.Application('web')
         serviceCollection = service.IServiceCollection(application)
         site = server.Site(root)
         return (site,application,serviceCollection)

    def Run(self):
        logpath="d:/doug/dev/play/twisted/log.txt";
        f = open(logpath, 'a')
        
        from twisted.python.log import startLogging
        from twisted.application.app import startApplication
        from twisted.internet import reactor
        
        startLogging(f)
        (site,application,serviceCollection) = self.WebServerConfig()
        startApplication(application, 0)
        #         i = internet.TCPServer(8089, site)
        #         i.setServiceParent(serviceCollection)
        
        reactor.listenTCP(8080, site)
        reactor.run()
        
    def Stop(self):
        reactor.stop()

if __name__ == '__main__':
    WebServer().Run()

}}}