The Wireless Zero Configuration service allows your network card to automatically select and connect to preferred networks as they become available. a service that is automatically scanning for different wireless networks.
By disabling this service, I noticed a huge improvement in the short “drops” of wireless connectivity. I can now have an active FTP, BitTorrent, or chat session running wirelessly and not worry about it being dropped.
To access this service and other Windows services, you can browse to the Control Panel, then Administrative Tools and finally double-click on Services.
Alternatively, you can launch Windows Run, type services.msc and hit OK. Alternatively, you can launch Windows Run, type services.msc and hit OK. From the services window you will want to scroll all the way down to Wireless Zero Configuration and right-click the name, then click Properties.
From the Service Status area choose Stop to stop the service.
From the Startup Type drop-down menu, choose Disabled so that the service doesn’t startup the next time you start Windows XP.
Your wireless internet card should have come with it’s own wireless connection management software, which you can use alternatively.
props to: paininthetech.com