I went searching and searching for a site that would show all MLS listed houses on a map. It took me several hours, but I found one! I'd been hoping there would be one for Google Earth, but it seems that the only ones that run on that software are not free.
And the results are:
|real estate mapping site - Trulia.com|
|realtor.com - where to go with the listing number once you're done, just to check and see if you're getting all the info that the real estate company provided - go to the bottom of the form and put in the mls number that you got from trulia.com|