Exactly what I needed… and more

First, I cannot believe this is free.
Second, if you are searching for this type of application, this is the one you need to download.
Third, its free?!
Fourth, I happened to have the floorplan to my house which made the setup much easier, but the tool to draw your own floorplan is remarkably easy to use as well.
Fifth, get it.

ColdPack about NetSpot: WiFi Analyzer