Microsoft have released a downloadable book for planning and architecting MOSS
http://technet2.microsoft.com/Office/en-us/library/64f7f9fb-3994-477f-9e6d-570812c3d5131033.mspx?mfr=true
Here’s a page snippet
Downloadable book: Planning and architecture for Office SharePoint Server 2007
Updated: December 14, 2006
This book provides information and guidelines to lead a team through the steps of
planning the deployment of a solution based on Microsoft Office SharePoint Server
2007. The audiences for this book are business application specialists, line-of-business
specialists, information architects, IT generalists, program managers, and infrastructure
specialists who are planning a solution based on Office SharePoint Server 2007. This
book also includes links to planning worksheets for recording information related
to your planning and deployment activities.
Click the following link to open a Microsoft Word .doc file that you download to your
computer and print. This document contains the same information as the “Planning and
architecture for Office SharePoint Server 2007” section of this TechNet Web site.
The size of this document is approximately 7 MB.
Planning and
architecture for Office SharePoint Server 2007 (http://go.microsoft.com/fwlink/?LinkId=79552&clcid=0x409)