Hiyaa!
Yes, is exactly as Zwerkules said. The module Project of Myth Drannor is plenty of custom content (a veeery big hak), but almost everything of it (except a bunch of placeables I personally made for the module) is already released in the NW Vault. I only retexture tilesets to make them homogeneus and the same time to add variety to fix my personal visión of the legendary ruins of Myth Drannor.
Nearly all the tilesets Zwerkules mentioned are in the module, with light modifications.
By the way, thanks for the compliment, Zwerk! '> I promise before the Old and Ancient Gods that someday in the near future I will finish and relèase the module... Sadly, now I am infernally busy writing the end of my doctoral thesis.