A:AnswerIn my experience- yes! My router is set up in the back corner of the house in a bedroom. With my old router, we sometimes couldn't even get a signal in the livingroom (home is about 2300+ sq ft). I have a brick home as well as double paned windows. With this router I can now receive signal even when across the street! I'm very pleased with the range of this router.
A:AnswerIf your router has detachable antennas with SMA connectors than yes you can use the SB1000 as to the coverage it depends on the wattage of your current router as the SB1000 is 1000mW. If your router is 600-800mW then there will not be much difference.
A:AnswerAny of the Netgear or Belkin WIFI boosters will work just fine for this application. Get the fastest one available. DO NOT get the cheapest - as it will be too slow.