Hello, go to your network connections:Right click the appropriate connection and go to properties,on the general tab check the box that notifies you about the state of your connection near the bottom. On the Wireless Networks tab take a look at the list of wireless networks half way down (preferred networks) and remove any other networks.

When you select your network, click on the properties button and go to the connection tab and make sure that the box is checked to automatically connect to your network when in range.

Let me know how you get on.

Regards

Martin