Ah, always helping the newbies(noobs).
Maps:
1. Install Torque Constructor
2. Make a "map" there.
3. Export.
4. Drop into the folders for maps
5. Test
6. Done
Add-Ons:
1. Download Milkshape, blender; generally any modeling program that can export .dts files.
2. Model
3. Script
4. Upload
5. Post