i first put the ini file in the Nebulan B Friage Folder, then i put that folder in the units folder. I put the Units_32 pic of the Nebulan in the regular Units_32 before the last eight images (starting from the army to the worker, i saw that you were supposed to do this for some reason on a post somewhere) I then created the unit using the latest patch editor. The name is Nebulan B Frigate I set minimal abilities (basically that of a galley for testing purposes), set the civilopedia entry to PRTO_Galley and then saved.
the moment civ3 crashes is when i click on the big button to select what to build in my city and boom,, it dies
i dont know what to do with the other 2 images that come with it. perhaps that is the cause