From TorqueWiki

Building = Interior or Structure

[edit] Links

http://www.luma.co.za/labs/tutorials/torque_pipeline/Luma%20Max%20to%20DIF%20Guide.pdf

[edit] map and dif (map2dif) Format

http://www.garagegames.com/docs/tge/general/apes09.php

http://tdn.garagegames.com/wiki/DIF/Map2Dif/Map_Entities

[edit] Tools

[edit] Blender

http://www.garagegames.com/mg/forums/result.thread.php?qt=71954

[edit] Torque Constructor

[edit] QuArK

[edit] Deled

.....is the best for now

[edit] Hammer

Valve bought it and you may not use it for Torque.

[edit] qRadient

[edit] map2dif

command line filter

[edit] map2dif+