To start at mod correctly, you need
1 - new map
2 - cut regions in Exmap from new map
3 - in Exmap, recover your regions in the Regions.csv excel file, you'll need that when you design your scenarios and Areas. Create your regions.ini alias file from them
4 - you can keep everything else from the DB
5 - Make your scenario: use a template excel, then change the data in the second thumbnail (cities) with your new one (step 3)
6 - Make sure you create the proper Areas.ini file from your new map/regions, you can't run with the original files, as they reference regions that no longer exist...
7 - Beg for help
Also don't forget to read the AGE Wiki (here: http://www.ageod.net/agewiki/Main_Page
) ... there are tons of useful info there...