Welcome to LQ. It sounds like your machine is detecting multiple wireless signals, but is not using the strongest one. Open a console session then
which will show the status of your network interfaces (eth0, eth1, and so forth). Let's assume that eth1 is your wireless interface, so then
which will display all the different signals your system can find, along with other interesting information such as signal strength, whether or not encryption is being used, etc. Your own signal should appear in the list. For illustration, let's assume it's called "mysignal", so to associate it with your interface you could
Code:
ifdown eth1
iwconfig eth1 essid mysignal
ifup eth1
Those 3 steps will bring down the eth1 interface, tell it to use mysignal, then bring it back up again. Please see the man pages for ifconfig and iwconfig. Good luck with it