If you're having a dts problem, chances are that other people have had the exact same problem. A look through these frequently asked questions could present you with a solution.

General
General questions that pertain to all (or no) modeling applications.

3ds Max
This section is for 3ds Max specific questions.

Maya
This section is for Maya specific questions.

Blender
This section is for Blender specific questions.

Milkshape
This section is for Milkshape specific questions.

Lightwave
This section is for Lightwave specific questions.

GameSpace
This section is for GameSpace specific questions.