When your photos look reasonably positioned, press the "Import" button to load them into your current iPhoto library. Geotagalog does not modify your original photo files, so iPhoto will always import copies into its library, rather than referencing the original files.
Geotagalog can also optionally import non-photo files (such as videos and audio clips) into iPhoto, although they will not be geotagged. Select the "Include non-photo items in import" checkbox to copy non-photo files into your current iPhoto library as part of the import process.
If you are using an unregistered (demo) version, Geotagalog will only import a limited number of the currently geotagged photos into iPhoto. To remove this limitation, please purchase a license key.