i succeded as well to import the db from http://gather.reet.org. into cartographer.
Here's something easier. I've hidden my Cartographer DB that contains more items than from gather.reet.org into an image here:
1. Click that link and save the image on the page somewhere.
2. Get Winrar from rarsoft.com
3. Drag and drop image into Winrar
4. Save lua files into your Savedvariables folder
Now that you have this and the other links and the fact that the author is working on a converter, I'll be taking mine offline.