regarding torch system:
Events
Conditions
Actions
Custom script: call SetDayNightModels ("Environment\DNC\DNCAshenvale\DNCAshenvaleTerrain\DNCAshenvaleTerrain.mdx","Environment\DNC\DNCAshe nvale\DNCAshenvaleUnit\DNCAshenvaleUnit.mdx")
ashenvale may not be your base lighting though, but they all look pretty similar