If you are having trouble maintaining a connection to your own wireless network, the problem may be caused by one of your neighbors using the same wireless network channel as you. Most wireless routers will allow you to change the channel the signal is being broadcast on. First, you need to scan for wifi networks at your location. There are a few free utilities that you can download that will do this. Here are 2 examples:
Windows: Xirrus Wi-Fi Inspector
Once you see what networks are in your area, pick a network channel (1, 6, or 11) that has the weakest signal, then use that one.