The IDimager community (Rainer / dodgetigger) developed two scripts for geo-tagging support.
The first script is a Download script that allows the recorded Gs data to be imported diring the image transfer from memorycard to PC. This script will read the recorded GPS data in the uniform GPX format.
The second script is the GPS Data entry script. This IDimager script allows to tag images manually using the online map service. The script also allows to import GPX data and also supports waypoints. GPS data can be written to Exif and XMP.
Below is a screendump of this script:

This is the original link to Rainer's scripts.
http://forum.idimager.com/viewtopic.php?t=1894Hert
[update hert; fixed the link to the new forum location]