How can I ignore a particular Wifi network? [duplicate]

Possible Duplicate:
How to stop Windows 7 from automatically connecting to unsecure wifi network

I'm using Windows 7 Ultimate. There are a bunch of Wifi networks within range of my desktop, however I only want to connect to my Wifi hub and ignore all others. Some of the other hubs within range are unsecured and appear to be causing my desktop to disconnect from my own hub


If you go to manage wireless networks in Network and Sharing Center you can right click on an entry and then in the properties deselect "connect automatically".