The New York Times technology page has a long article on how to decrease the dead spots you may encounter with your wireless router. This was of interest to me since we have a number of areas in the house where the wireless signal is very low due to distance from the router and very thick walls.
But, by the end of the story the solution looks to be way too difficult for most of us to accomplish. Here is the best solution they give:
"Put in Cat 5 cable throughout the house and connect each device directly into it. But unless you have put these cables in your walls when building a new home, that’s impractical. Some laptops require Cat 5 adapters. And no one wants to tack unsightly wires along their baseboards.
For those without cables in their walls, a hard-wired connection can be sent throughout the house using one of two technologies: MoCA and Powerline.
MoCA, or Multimedia over Coax Alliance, uses a home’s coaxial, or cable TV, cables to carry a network signal. Powerline technology sends a network signal through a home’s electrical wiring. To use Powerline, one Powerline module is plugged into an electrical outlet next to a router, and the two are connected with an Ethernet cable. The other Powerline unit is plugged into the wall near the device that is to receive the network signal. That device is then connected to the Powerline unit also with an Ethernet cable".
The best solution for us is to try and stay within good range of our wireless router.