My family use Dell computers and we all feed off the same router which is Linksys. Although, what happens is because of the location of the linksys router, my signal comes and goes weekly. I was wondering if I were to purchase an Airport Express, would I be able to use is as an extender/booster with the existing network that I already have? If I cannot do that, would i still be able to use the Airport Express and have it dedicated to just my computer? and if so, how do i go about doing that? Thanks!