busyhttp://www.napavintners.com/maps/map_of_napa_wineries.asp
It's pretty awesome. You can filter the results ... like, for example, if you want to show only ones that are open to the public, or do tours, or where you can hold a wedding(!), then click it and watch the map change. Interesting. Odd that only V. Sattui claims to do weddings. Actually, waitasecond... didn't I hear that Napa County law made it so's wineries couldn't host weddings? Oh well. Not something I have to worry about any more, being happily married. :-)