Models/Implementation Strategies/Applications/IS Planning

Please help with the following study questions. Detail responses are greatly appreciated.

1. What is the Logic To-Be Model? What is accomplished with the Logic To-Be Model?

2. Discuss the following implementation strategies used to install new systems: 1) Parallel Strategy 2) Pilot Strategy 3) Phasing Strategy and 4) Cutover Strategy.

3. What challenge do file-sharing applications such as Napster cause organizations in trying to enforce policies and procedures?

4. Describe the traditional IS planning process. Why is this planning process changing?