I entered "8405-G Richmond Highway Alexandria, VA 22309" (without the quotes) into Microsoft's LiveMaps and got this:

http://maps.live.com/?q=8405-G+Richm...&setLang=en-CA

Just click on "Bird's Eye" in the top left corner to get a view right on top of Duane's store.

I'm surprised at how accurate it was, the arrow is right on top of it.