Catalog name: Maemo Extras Web address: http://repository.maemo.org/extras Distribution: gregale Components: free Technically, if you know SQL and have access to sqlite3, you can modify the POI database however you like, so long as the existing tables and columns aren't removed or renamed. You can add a column, but it won't have any effect on Maemo Mapper - that is, Maemo Mapper won't display the new column anywhere.