Our lead writer for the Implementation Guide sez this on the CRM team blog:
I just wanted to remind everyone that the Microsoft Dynamics CRM 4.0 Implementation Guide is now available at the Microsoft Downloads Center. Not only does it cover installation and maintenance, it discusses planning considerations that are potentially very important for any successful implementation of a CRM platform.
Here is my last blog about the top five improvements to the Implementation Guide.
This sure makes a lot of sense to me.