Wireless Zero is the service provided in XP to select wireless networks. It is likely you have a conflicting utility running that was provided with your wireless device, and it is disabling the Wireless Zero service.
You will have to disable or uninstall the conflicting utility to get Wireless Zero to remain enabled. That likely will involve another call to your tech.
I recently moved but still have the same internet provider. However, I couldn't connect to the net until a tech walked me through the process of starting the "Wireless Zero Configuration" setting in services.msc. Of course, I thought the problem was fixed until I turned off the laptop and when I turned it on again, the setting went back to "not started." Now I have to manually start the wireless zero configuration setting each time I want to connect to the net. Does anyone know how I can save the setting to "started" so I can be connected automatically? Any help would be deeply appreciated.