SAS VA - Decision Tree Preparation - Building Models with Real Insight

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Can anyone give me supporting materials to build decision tree in SAS VA?. Please don't refer me to SAS VA User Guide 6.3. Please guide me to any materials which can help me to build, analyze, do segmentations & predictions, build complex models in SAS VA. I need to understand building Decision Tree models in a better way. UG 6.3 doesn't help me much to leverage the power of Decision Tree option available in VA to the maximum extent. I want to convey some useful insights and predictions to my client who has got multiple product lines.