This excellent paper presents a game plan for CIO's first 100 - actually 120 - days.
The paper's premise is that a CIO should answer five key questions to develop their 90-day action plan:
1) What will impact the sequence and timing of action during my first 120 days?
2) What are my guiding principles?
3) What immediate actions should I take?
4) How do think strategic and act to keep the lights on?
5) How do I build meaningful relationships with peers and seniors?
Then it addresses each of these questions.