[Steve Viegas]

I don't know how old your router is, but often times new firmware is developed after the product has been released. If you know how to get into the administrative function of your router, you may be able to upgrade the firmware. Newer firmware may improve your router's ability to stay connected, may increase the systems power output, and may decrease the signal to noise ratio.

If you can add a larger antenna to your system, that would likely take care of your problem. Don't worry about amplifiers, antennae are the way to go. You can think of an amplifier as yelling, that works to get the message one way, but if the other side is still whispering, yelling isn't going to help. An antenna increases not only your ability to yell, but it increases the size of your ears too.