Unpack the Builder Icons into your /Program Files/Atari/Neverwinter Nights 2/NWN2Toolset/Tiles folder. This will allow you to see what shape the new custom interior tiles are and place them in new areas.

Next, unpack the Builder Overrides into your /My Documents/Neverwinter Nights 2/override folder. Overrides can cause problems with other Persistent worlds, modules and campaigns, so use with caution! Outdated overrides can cause problems as well. The overrides ONLY need to be in place WHILE you are placing custom tileset tiles. I strongly recommend removing them from your /override folder at all other times. Also, remember to always clear your override folder before patching NWN2.

You should now be able to make areas including custom tilesets. Please note that ACR functions, persistency, scripts, static quests, and spawns will not function inside this building test module. These advanced functions require more complex setup, and will be covered in a separate posting.