update 0.0 latitude/longitude fields

I screwed up and am trying to find a fix.

I set up CCK fields in a input view and then had somebody input about a 1,000 adresses. I had installed the GMap module but did not input a google api key! My bad!

Now I have a thousand addresses with their respective lat/long fields set to 0/0. I have now set the key and new entries have their lat/long field filled in nicely, automagically.

BUt how do I get the thousand entries with bad lat/longs updated to their correct values?

I saw a discussion obout automaticcaly regenerating the geoaddress if the lat/longs are wiped but not sure what they meant. Do I need to delete the zero entries in the lat long field? And what causes teh entry to be regenerated?

any help would be much appreciated.

thanks, Scott