One of the must-download item from Download! PC is the Nokia Map and Nokia Map Loader (later on, I found it these can be download directly from here without using the Download! PC client).
This is cool, despite of it's kinda slow and large in size, that you can have maps of nearly all famous cities around the world, for FREE. The down side, especially to Chinese, is that the map are mostly in English (not localized). I got a problem when using it in Macau. But, after all it is free. What do you expected?