I have a wireless router at my mother-in-law's she has DSL, I live about 500 feet away in a mobile home, I also have a router, I want to extend her range so that it will reach to me at my house. I have a linksys router and so does she, I looked on the internet and saw the wireless range extenders but was unsure if they would range out that far or not?? Never used one before don't know if I should do that or if I need to do something else??