Tech Help: Geographical Distribution of Addresses

Anyone know how to take a list of addresses (I have about 60) and put  
them on a google or yahoo map easily?  I'm trying to see a  
geographical distribution of addresses in our city.
I'm worried about privacy and don't want them published for all the  
world to see or worse yet, go on a junk mail list.
I also don't want to spend more time creating it than I could by  
simply printing out a map and using a marker.
Anyone done this before?

regards,
-Lance

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