Mike,
Another thread prompted me to test something… adding a city code to WW.
If you add the city code for NY, for example: USNY0996 to WW, the ToolTip correctly translates the city code to the city name:
http://img408.imageshack.us/img408/4118/tooltipnyzb7.png
but the WW main program window leaves the city code instead of translating to the correct city name: