Adding devices to Google maps

I am evaluating the Netflow Analyzer 6 Professional edition and I am trying to add devices to the Google maps. I created a key from google the other day so the maps work. It defaults to a world map. It states that no devices are assigned to any locations and to click the hyperlink to assign a location. I select teh hyperlink and it lists my devices and an option to assign the device to a location. I select the assign link and it is asking for a location name. I have tried the address, the device name as well as the city and state of the device. It says to click on the location to place the device on the map. If I type in a city name the Google map takes me there but I cannot add a device to any specific location. Im sure I am just missing something but I have tried everything.