are there .nsbtx files? indicates 3d files and for that you'll need help from someone other than me.
Are there .ncgr .nclr .nscr? these are your basic image files and you can view them with tahaxan (not replace or edit It justs dumps them.
you can import export with crytaltile2 just make sure you are in tile viewing mode first or you might see the hex.
If all you are seeing is .bin then ct2 can still help it just means playing around with the properties and looking around the rom a lot.
If you don't like ct2, get another tile viewer and try it.
If you still need help post again.