Batchgeocode.com has put together a clean-looking front end to Yahoo’s geocoding service if you need to map small numbers of addresses.
Here our Excel-based tool that performs similar duty; it takes a list of addreses, geocodes and maps them. We’ve used this tool to map thousands of names. It’s quite a bit quicker than the batchgeocode web tool, though not as flexible in its mapping output. Enjoy.
Note: I’ve just posted an update of the Excel geocoding tool here.