Thank you Steve!

>Ronald,
>
>When you geocode an address the Geocoder must be able to parse the address. In any data set you will have some percentage of addresses that are not undrestandable when parsed by the grocoder software. You 80+% number is not unusual.
>
>Steps for Proper Geocoding of an Address
>
>First step: Run your address through some service that validates the address. This should be done once when the address is first entered or edited. This will give you a few more percentage points of geocoded addresses in your data set.
>
>Second step: Geocode the address using an address geocoder.
>
>Third Step: If no Lat, Lon was returned in step 2 then use the ZipCode in a ZipCode centroid geocoder.
>
>Fourth Step: If no Lat, Lon was returned in step 3 then try to get the centroid of the City or the County.
>
>Fifth Step: If no Lat, Lon was returned in step 4 then use the Centroid of the Stste.
>
>Sixth Step: If no Lat, Lon was returned in step 5 then use the centroid of the country or region.
>
>You should have all of them geocoded by this time. If not, mark them for review. You should include a Geocode Level flag in your table that tracks what level that the Geocode was done. For example if you found the geocode using address Geocoding set the flag to 1. If you found the geocode using Zip Code geocoding set the flag to 2...
>
>Here are a couple of links that you might find interesting on this topic.
>
>http://groups.google.com.au/group/Google-Maps-API/web/resources-non-google-geocoders?version=61
>http://geocoder.ibegin.com/
>http://geocoder.ibegin.com/downloads.php
>
>Hope this helps!
>
>Steve